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A tariff is a tax on imports. Imposing a tariff increases the cost of importing foreign cheese, which shifts the import supply curve upwards and increases the domestic price of cheese. The higher price makes domestic production more profitable, leading to an increase in domestic production. At the same time, consumers face higher prices, which reduces consumer surplus. Thus, C is correct. A is incorrect because consumer surplus decreases. B is incorrect because imports decrease. D is incorrect because tariff revenues increase government tax revenue.

1 mark for the correct option C.

Long-run economic growth is driven by increases in the productive capacity of the economy (supply-side improvements). Subsidies for research and development (R&D) encourage innovation and technological progress, while investment in education improves the skills and productivity of the labor force. Both of these policies shift the production possibility curve (PPC) and the long-run aggregate supply curve outwards, promoting long-run growth. Other options include contractionary policies or actions that reduce productivity (such as reducing infrastructure spending or training), which do not promote long-run growth.

1 mark for the correct option C.

A monopoly is defined as a market structure dominated by a single seller of a unique product with no close substitutes, protected by high barriers to entry that prevent new firms from entering the market. Option A describes perfect competition. Option C describes oligopoly. Option D describes monopolistic competition.

1 mark for the correct option B.

While real GDP per head measures average income per person adjusted for inflation, it does not show how that income is distributed. A country could have a very high real GDP per head, but if the wealth is concentrated in the hands of a small elite while the majority of the population lives in poverty, the average figure will not accurately reflect the typical citizen's living standards. Option A is incorrect because 'real' GDP already adjusts for inflation. Option B is incorrect because 'per head' adjusts for population. Option D is incorrect because GDP generally excludes non-market activities.

1 mark for the correct option C.

When domestic investors purchase foreign assets, they must first sell their domestic currency to buy foreign currency. This increases the supply of the domestic currency on the foreign exchange market, which causes its value to depreciate. Conversely, higher interest rates (A), increased export demand (B), and lower domestic inflation (D) would all increase demand for the currency and lead to appreciation.

1 mark for the correct option C.

To find the marginal cost, we first calculate the total cost (TC) of producing 100 units: \( TC = TFC + TVC = $2000 + $3000 = $5000 \). The total cost of producing 101 units is given as \( $5080 \). Marginal cost is the change in total cost resulting from producing one additional unit: \( MC = TC101 - TC100 = $5080 - $5000 = $80 \).

1 mark for the correct calculation leading to option A.

An inferior good is a good for which demand increases as consumer income decreases. Therefore, a decrease in the average household disposable income will cause consumers to switch from more expensive transport options (like private cars or taxis) to cheaper public bus transport, shifting its demand curve to the right. Option A would cause a movement along the demand curve (contraction). Option B would cause a shift to the left, as petrol is a complement to cars (a substitute for buses). Option D would shift the demand for bus transport to the left as people choose cycling instead.

1 mark for the correct option C.

An increase in income tax is a contractionary fiscal policy. It reduces consumers' disposable income, which reduces aggregate demand (AD). A decrease in AD helps control demand-pull inflation, causing inflation to decrease. Additionally, lower consumer spending means that domestic consumers will purchase fewer imports, which improves the trade balance and decreases the current account deficit. Therefore, option A is correct.

1 mark for the correct option A.

An import tariff on foreign steel increases the price of imported steel, allowing domestic steel producers to raise their prices. Consequently, domestic steel prices rise, increasing the revenue of domestic steel producers. Because steel is a key input for car manufacturers, their production costs will rise.

1 mark for the correct option. A tariff increases imported goods' prices, raising domestic prices and domestic producer revenue, but raising costs for downstream industries.

Nominal GDP measures output at current prices, whereas real GDP measures output at constant prices (adjusting for inflation). If real GDP is constant, physical output has not changed. If nominal GDP has increased, it must be because the general price level (inflation) has risen.

1 mark for the correct option. Distinguish between nominal (current prices) and real (constant prices/output) GDP.

In a monopoly, high barriers to entry prevent new firms from entering the market, allowing the monopolist to sustain supernormal (abnormal) profits in the long run. Under perfect competition, free entry and exit mean firms can only earn normal profits in the long run.

1 mark for the correct option. Barriers to entry allow long-run supernormal profits in monopoly but not in perfect competition.

The standard HDI measures development based on three dimensions: health (life expectancy), education (mean and expected years of schooling), and living standards (GNI per capita PPP). The Gini coefficient, which measures income inequality, is not a direct component of the standard HDI calculation.

1 mark for identifying the correct indicator that is excluded from the standard HDI.

A higher relative inflation rate makes the country's exports less price-competitive and imports more attractive. This reduces the foreign demand for the currency (to buy exports) and increases the domestic supply of the currency (to buy imports), leading to a depreciation. Other options would increase demand or decrease supply of the currency, causing appreciation.

1 mark for identifying the cause of currency depreciation in a floating exchange rate system.

Acting as the 'lender of last resort' to guarantee liquidity to commercial banks in times of financial crisis is a fundamental role of a central bank. Commercial banks deal directly with the public by accepting deposits, providing business loans, and exchanging retail foreign currency.

1 mark for distinguishing between central bank and commercial bank roles.

Deregulation of utility industries to promote competition is a microeconomic supply-side policy that reduces administrative barriers, fosters competition, and improves efficiency, thereby increasing the potential output (productive capacity) of the economy. Raising taxes and reducing infrastructure spending are fiscal measures that could harm capacity, while raising interest rates is contractionary monetary policy.

1 mark for identifying the supply-side policy that boosts productive potential.

Developing countries typically have higher birth rates and larger young populations, leading to a higher youth dependency ratio. In contrast, tertiary sector employment, life expectancy, and real GDP per capita are all typically higher in developed economies.

1 mark for identifying the demographic/economic characteristic typical of developing nations.

A quota is a physical limit on the quantity of a good that can be imported. By restricting the supply of foreign motor vehicles, the overall market supply curve shifts to the left, which causes the domestic price of motor vehicles to rise. As imports are restricted and prices rise, domestic producers face less foreign competition and can expand their output. Therefore, domestic production of motor vehicles increases. Unlike tariffs, quotas do not automatically generate revenue for the government, making option A incorrect.

Award 1 mark for the correct option (B).
- Reject A: Quotas do not directly generate tax revenue for the government.
- Reject C and D: Quotas reduce supply, which increases prices rather than decreasing them.

To find the approximate percentage change in real GDP per head, we adjust nominal GDP growth for changes in inflation and population:
1. \(\text{Approximate Real GDP growth} = \text{Nominal GDP growth} - \text{Inflation rate} = 6\% - 4\% = 2\%\).
2. \(\text{Approximate Real GDP per head growth} = \text{Real GDP growth} - \text{Population growth} = 2\% - 1\% = 1\%\).
Thus, the country's real GDP per head increased by approximately 1%.

Award 1 mark for the correct calculation (B).
- Reject A, C, and D: These values represent incorrect combinations or miscalculations of the inflation and population growth adjustments.

A monopoly is a sole supplier and acts as a 'price maker', meaning it has the market power to set the price of its product. In contrast, a firm in perfect competition is a 'price taker' and must accept the market price. Both types of firms have average revenue equal to price (AR = P), and both are assumed to aim for profit maximisation. A perfectly competitive firm faces a perfectly elastic demand curve, whereas a monopoly faces a downward-sloping demand curve.

Award 1 mark for the correct identification of market power (A).
- Reject B and C: These apply to both monopoly and perfect competition.
- Reject D: This is a feature of perfect competition, not monopoly.

The Human Development Index (HDI) consists of three key dimensions: a long and healthy life (measured by life expectancy at birth), knowledge (measured by mean and expected years of schooling), and a decent standard of living (measured by Gross National Income (GNI) per capita/head at purchasing power parity). Therefore, real GNI per head is the correct indicator.

Award 1 mark for identifying the correct component of HDI (C).
- Reject A, B, and D: While absolute poverty, unemployment, and the Gini coefficient are economic development indicators, they are not direct components used to calculate the HDI value.

A reduction in income tax rates increases consumers' disposable income, which stimulates consumer expenditure and increases aggregate demand (AD). Higher demand leads to economic growth and expansion, which reduces unemployment as firms hire more labor to meet demand. However, a fast-growing economy with rising demand can lead to demand-pull inflation. This represents a conflict between the macroeconomic goals of low unemployment and low inflation.

Award 1 mark for identifying the correct macroeconomic conflict (C).
- Reject A: Expansionary policies reduce, rather than increase, unemployment.
- Reject B: Increased domestic spending usually increases import consumption, worsening the current account.
- Reject D: Lower tax rates generally increase, rather than decrease, the government budget deficit in the short run.

When domestic residents buy more foreign financial assets, they must sell their domestic currency to purchase foreign currencies. This increases the supply of the domestic currency on the foreign exchange market, causing its value to depreciate. A rise in domestic interest rates (A) attracts hot money inflows, increasing demand and causing appreciation. An increase in foreign demand for exports (B) and lower relative inflation (C) both increase foreign demand for the currency, causing appreciation.

Award 1 mark for the correct scenario leading to depreciation (D).
- Reject A, B, and C: These changes would increase demand or reduce the supply of the domestic currency, leading to an appreciation rather than a depreciation.

First, because e-books are substitutes, a decrease in their price will cause consumers to switch away from physical books, shifting the demand curve for physical books to the left (reducing both price and quantity). Second, an increase in paper costs raises production costs for physical books, shifting the supply curve to the left (increasing price and reducing quantity). Since both shifts reduce the quantity, the equilibrium quantity will definitely decrease. However, the demand shift lowers price while the supply shift raises price, making the final effect on equilibrium price uncertain without knowing the magnitude of the shifts.

Award 1 mark for the correct analysis of simultaneous shifts (C).
- Reject A and B: The final direction of the price change is uncertain, but quantity must decrease.
- Reject D: Both shifts act to decrease, rather than increase, the equilibrium quantity.

Market-based supply-side policies aim to improve the efficiency of markets by reducing government intervention and barrier barriers to competition. Reducing the power of trade unions through labor market deregulation makes labor markets more flexible, allowing wages to be determined more freely by market forces. Government spending on training (A), state-funded infrastructure projects (C), and subsidies (D) are all interventionist supply-side policies because they involve active government spending and intervention.

Award 1 mark for identifying the market-based supply-side policy (B).
- Reject A, C, and D: These are interventionist supply-side policies because they rely on direct government expenditure and market involvement.

Agricultural production is highly dependent on climate and weather. Therefore, a country that specialises in agricultural products (Country X) is more vulnerable to supply shocks like droughts, floods, or pests, which can cause significant fluctuations in its export earnings compared to a country specialising in manufactured high-tech goods (Country Y).

1 mark for correct answer B. Other options are incorrect: A represents a potential benefit, C represents an advantage (economies of scale), and D is incorrect because agricultural goods do not necessarily have higher transport costs for all products.

Commercial banks are retail institutions that deal directly with individuals and private businesses, providing them with services like savings accounts, personal loans, and mortgages. The central bank acts as the government's bank and the bank to commercial banks, and does not provide retail banking services directly to the general public.

1 mark for correct answer C. Other options are incorrect: A, B, and D are standard functions of a central bank.

A monopoly has significant market power, allowing it to restrict output and charge a higher price to maximise profit. When the market becomes perfectly competitive, new firms enter, increasing supply and competition. This drives the price down and increases the total output of the industry.

1 mark for correct answer D. Other options are incorrect: A, B, and C describe effects opposite to the standard outcomes of increased market competition.

Structural unemployment occurs when there is a mismatch between the skills of unemployed workers and the skills needed for available jobs. Government-funded vocational retraining schemes are a supply-side policy that helps workers acquire new skills, directly addressing the cause of structural unemployment.

1 mark for correct answer C. Other options are incorrect: A is monetary policy (demand-side), B might increase voluntary unemployment by reducing the incentive to work, and D is expansionary fiscal policy (demand-side).

The basic economic problem is scarcity. Scarcity arises because human wants are unlimited (infinite) but the resources available to satisfy these wants (land, labour, capital, enterprise) are finite (limited).

1 mark for correct answer C. Other options are incorrect: A is an equity concern, B refers to market failure, and D refers to government intervention, none of which are the fundamental definition of the basic economic problem.

A credit item represents an inflow of money into the country. When a foreign tourist spends money at a hotel in Country Y, it is an export of services (tourism) by Country Y, resulting in a money inflow. Hence, it is recorded as a credit item on the current account.

1 mark for correct answer B. Other options are incorrect: A is recorded in the financial account, C represents a secondary income outflow (debit), and D represents an import of goods outflow (debit).

**(a)** Transport (or education).

**(b)** The central bank of Zendia responded to rising inflation by raising the main interest rate (1 mark) from 3.0% to 5.5% / by 2.5 percentage points in 2023 (1 mark).

**(c)**
- Formula: \(\text{Percentage Change} = \frac{\text{New Value} - \text{Original Value}}{\text{Original Value}} \times 100\)
- Working: \(\frac{1.5 - 1.2}{1.2} \times 100 = \frac{0.3}{1.2} \times 100 = 25\%\)
- Answer: 25% (or 25).

**(d)**
- Problem 1: Rising cost of borrowing due to interest rates increasing from 3% to 5.5%.
- Problem 2: Rising global prices of steel (a key raw material/input).
- Explanation: Higher interest rates make loans and investment expensive, while rising steel prices increase production costs and reduce profit margins.

**(e)**
- **Diagram description**: The diagram should have Price (P) on the vertical axis and Quantity (Q) on the horizontal axis. A downward-sloping Demand curve (D) and an upward-sloping Supply curve (S0) intersect at initial equilibrium price (P0) and quantity (Q0). The Supply curve shifts leftward to S1, establishing a new equilibrium with a higher price (P1) and a lower quantity (Q1).
- **Economic Analysis**: Steel is a vital raw material/input in manufacturing motor vehicles. An increase in the price of steel raises the cost of production for motor vehicle manufacturers. This reduces the profitability of supply, causing the supply curve to shift to the left (from S0 to S1). As a result, the market equilibrium price of motor vehicles rises (P0 to P1) and the equilibrium quantity transacted falls (Q0 to Q1).

**(f)**
- **General relationship**: There is generally an inverse (negative) relationship between the unemployment rate and the inflation rate among most of the countries.
- **Evidence**: In Zendia, the unemployment rate is relatively low at 4.2% while the inflation rate is high at 6.8%. In contrast, Vandor has a higher unemployment rate of 7.8% and a much lower inflation rate of 1.5%. Miria follows this trend with a moderate unemployment rate of 5.1% and a moderate inflation rate of 3.5%. This indicates that as unemployment falls, inflation rises.
- **Exception**: Kalia is an exception to this relationship. It has the highest unemployment rate in the dataset (11.5%) but also a very high inflation rate (8.2%), demonstrating a situation of stagflation.
- **Economic reasoning**: When unemployment is low, consumer demand is typically high, and wage pressures rise, causing demand-pull and cost-push inflation. Conversely, high unemployment reduces household income, dampening consumer spending and price pressures. Exceptions like Kalia can occur due to severe supply-side shocks or rising costs of imported goods, driving up prices despite high unemployment.

**(g)**
- **Arguments in favour of imposing a tariff (Should)**:
- **Protection of infant/domestic industries**: A tariff will make imported electrical components more expensive, encouraging Zendian manufacturers to purchase from domestic suppliers, protecting local jobs and assisting domestic industry growth.
- **Improvement in the current account balance**: Higher import prices will discourage purchases of foreign components, reducing total import expenditure and helping improve Zendia's current account balance.
- **Government revenue**: The tariff acts as a tax on imports, generating extra revenue which the government can use to fund public services or infrastructure.
- **Arguments against imposing a tariff (Should not)**:
- **Higher production costs**: Zendia's export-driven manufacturers (such as electronics and motor vehicles) rely on imported components. Tariffs will increase their cost of production, making Zendian exports less price-competitive globally.
- **Retaliation**: Trading partners may retaliate by imposing tariffs on Zendia's exports, hurting Zendia's successful manufacturing sectors.
- **Domestic inefficiency**: Protected domestic industries might lack the incentive to reduce costs and innovate due to reduced foreign competition.

**(h)**
- **Arguments that a rise in interest rates will reduce economic growth**:
- **Reduced consumption (C)**: Higher interest rates make borrowing for expensive purchases (e.g., cars, houses) more costly. It also increases the reward for saving, encouraging households to save rather than spend, which reduces aggregate demand.
- **Reduced investment (I)**: Firms face higher borrowing costs to fund capital projects or business expansions. This reduces investment, leading to slower capacity growth and lower demand for investment goods.
- **Reduced net exports (X-M)**: Higher interest rates can attract hot money inflows, appreciating the national currency. A stronger currency makes exports more expensive and imports cheaper, worsening net exports.
- **Contraction in output**: The decrease in aggregate demand (C + I + G + (X-M)) leads to a fall in real GDP and slower economic growth in the short term.
- **Arguments that a rise in interest rates may NOT reduce economic growth**:
- **High business and consumer confidence**: If optimism remains exceptionally high, households and firms may continue to borrow and spend regardless of interest rate hikes.
- **Offsetting policies**: If the government simultaneously runs expansionary fiscal policy (e.g., investing in infrastructure and education, as Zendia is doing), this injection of demand can offset the contractionary effects of monetary policy.
- **Macroeconomic stability**: If the interest rate hike successfully controls runaway inflation, it can restore business confidence and create a more stable environment, supporting healthier, sustainable long-term economic growth.
- **Time lags and size**: Small incremental rises may have negligible impacts, and monetary policy actions often have time lags of up to 18-24 months before they fully impact real economic activity.

**(a) [1 Mark]**
- 1 mark for identifying transport or education.

**(b) [2 Marks]**
- 1 mark for identifying that the central bank raised the interest rate.
- 1 mark for referring to relevant data (from 3.0% to 5.5% / by 2.5 percentage points).

**(c) [2 Marks]**
- 2 marks for the correct calculation: 25% (or 25).
- 1 mark for correct working but incorrect final calculation: \(\frac{1.5 - 1.2}{1.2} \times 100\).

**(d) [3 Marks]**
- 1 mark for identifying rising interest rates/cost of borrowing.
- 1 mark for identifying rising global steel prices.
- 1 mark for explaining how either of these problems hurts firms (e.g., reduces profitability, makes capital investments more expensive).

**(e) [4 Marks]**
- 1 mark for correctly labeled axes (Price, Quantity) and curves (Demand, Supply).
- 1 mark for shifting the supply curve to the left.
- 1 mark for showing a higher equilibrium price and a lower equilibrium quantity.
- 1 mark for explaining that steel is a raw material, so its price rise increases costs of production and reduces supply.

**(f) [5 Marks]**
- 1 mark for identifying the general inverse relationship between unemployment and inflation.
- 1 mark for using data from at least two countries (e.g., Zendia and Vandor) to support the general trend.
- 1 mark for identifying Kalia as the exception to the rule.
- 1 mark for using data to show Kalia's exceptional status (highest unemployment at 11.5% and highest inflation at 8.2%).
- 1 mark for explaining the economic reasoning behind the relationship (e.g., low unemployment indicates high economic activity and demand-pull inflation, whereas Kalia's stagflation could be due to cost-push factors).

**(g) [6 Marks]**
- Up to 4 marks for discussing reasons why Zendia's government should impose a tariff.
- Up to 4 marks for discussing reasons why Zendia's government should not impose a tariff.
- *Note*: Maximum of 4 marks if only one side is discussed.

**(h) [7 Marks]**
- Up to 5 marks for discussing how/why rising interest rates reduce economic growth (focusing on consumption, investment, exchange rates, and aggregate demand).
- Up to 5 marks for discussing why rising interest rates may not reduce economic growth (focusing on offsetting fiscal policies, consumer confidence, economic stability, and lags).
- *Note*: Maximum of 5 marks if only one side is discussed.

(a) A tariff is a tax imposed on imported goods and services entering a country.

(b) Two reasons why a government protects infant industries:
1. To allow new firms to grow and achieve economies of scale: Infant industries are newly established and have high average costs. Protection gives them time to build capacity, increase efficiency, and lower costs to compete internationally.
2. To prevent structural unemployment: If new industries fail immediately due to foreign competition, it can lead to job losses and a rise in unemployment. Protection preserves domestic employment opportunities.

(c) Analysis: A tariff acts as an additional cost of production on foreign firms exporting to the country. This causes the supply curve for imported electronic devices to shift to the left from \(S\) to \(S_1\). As a result, the equilibrium price of imported devices rises from \(P\) to \(P_1\), and the equilibrium quantity demanded falls from \(Q\) to \(Q_1\). Consumers pay higher prices and purchase fewer imports, while domestic producers of close substitutes experience a rise in demand.

(d) Discussion:
Economic growth can improve living standards because higher real GDP means higher national income. This can lead to increased employment, higher disposable incomes, and greater consumption of goods and services. Furthermore, higher tax revenues allow the government to invest more in public goods such as healthcare, education, and infrastructure, which directly enhances the quality of life.

However, economic growth may not always improve living standards. Growth can generate negative externalities, such as pollution and environmental degradation, which harm public health. If growth is driven by a few capital-intensive industries, income inequality may rise, leaving the majority of the population no better off. Additionally, growth achieved through longer working hours can lead to stress, reduced leisure time, and lower overall well-being.

Part (a) [2 marks]:
- 1 mark for identifying it as a tax.
- 1 mark for specifying that it is on imports.

Part (b) [4 marks]:
- 1 mark for identifying a reason (up to 2 reasons).
- 1 mark for explaining each reason in relation to infant industries.

Part (c) [6 marks]:
- Up to 3 marks for a clear, correctly labeled diagram: Axes labeled (Price and Quantity) [1 mark]; supply curve shifting leftward [1 mark]; original and new equilibria clearly indicated [1 mark].
- Up to 3 marks for written analysis: Explaining that the tariff increases the cost of supply [1 mark], leading to a higher price [1 mark] and a lower quantity traded [1 mark].

Part (d) [8 marks]:
- Up to 5 marks for explaining why economic growth improves living standards (e.g., higher incomes, more employment, better public services).
- Up to 5 marks for explaining why it might not (e.g., pollution, income inequality, loss of leisure time).
- Note: Max 6 marks if only a one-sided discussion is provided.

(a) An oligopoly is a market structure dominated by a small number of large firms that are mutually interdependent.

(b) Two characteristics of a monopoly market structure:
1. Single seller / Sole supplier: There is only one firm dominating the entire market, meaning the firm is the industry.
2. High barriers to entry: Obstacles such as high start-up costs, legal protection (patents), or control of resources prevent new firms from entering the market, allowing the monopolist to maintain long-run supernormal profits.

(c) Analysis: A large-scale advertising campaign represents a significant fixed cost for a firm. Initially, this expenditure will increase the firm's total cost, shifting its average cost (AC) curve upwards. However, if the campaign is successful, it increases consumer awareness and brand loyalty, shifting the demand curve for the firm's product to the right (increasing sales volume). If the expansion in output is substantial, the firm may benefit from marketing economies of scale, eventually lowering its average cost. The increase in sales volume and potential rise in price due to brand loyalty can substantially increase total revenue, leading to higher long-run profits.

(d) Discussion:
Consumers may benefit because large firms can exploit economies of scale, leading to lower average costs which can be passed on to consumers in the form of lower prices. Additionally, these firms earn significant profits which can be reinvested into research and development (R&D), resulting in high-quality, innovative products and advanced technologies.

Conversely, consumers may not benefit because a lack of intense competition allows these firms to restrict output and charge high prices, leading to allocative inefficiency. Firms in highly concentrated markets may also engage in collusive behavior to keep prices artificially high, offering consumers limited choices and poorer customer service due to the absence of alternative options.

Part (a) [2 marks]:
- 2 marks for a complete definition (e.g., a market structure dominated by a few large firms with mutual interdependence).
- 1 mark for partial definition (e.g., dominated by a few large firms).

Part (b) [4 marks]:
- 1 mark for identifying a characteristic (up to 2 characteristics).
- 1 mark for explaining each characteristic.

Part (c) [6 marks]:
- Up to 2 marks for explaining the effect on average costs (increases initial fixed costs, but can lead to economies of scale at higher output).
- Up to 2 marks for explaining the impact on sales volume (shifts demand curve to the right due to brand awareness and customer loyalty).
- Up to 2 marks for explaining the impact on profits (if revenue increase exceeds the advertising cost, profits rise).

Part (d) [8 marks]:
- Up to 5 marks for discussing the benefits to consumers (economies of scale, R&D/innovation, product quality).
- Up to 5 marks for discussing the drawbacks to consumers (higher prices, reduced choice, potential collusion, lack of efficiency).
- Note: Max 6 marks if only a one-sided discussion is provided.

(a) Depreciation is a decrease in the value of a currency relative to other currencies within a floating exchange rate system, determined by market forces of demand and supply.

(b) Two causes of a current account deficit:
1. High domestic inflation rate relative to trading partners: This makes domestic exports more expensive and less competitive abroad, while imports become relatively cheaper, leading to an increase in imports and decrease in exports.
2. Strong domestic economic growth: When national income rises, consumers have higher disposable income, and their marginal propensity to import increases, leading to a surge in expenditures on foreign goods and services.

(c) Analysis: A depreciation of the currency means that foreign buyers need less of their own currency to buy a unit of the domestic currency. This lowers the foreign price of domestic exports, making them more competitive and increasing export volumes. Simultaneously, domestic buyers must pay more of their currency to buy foreign goods, raising the domestic price of imports and reducing import volumes. Assuming demand for exports and imports is price elastic (satisfying the Marshall-Lerner condition), the total revenue from exports will rise and the total expenditure on imports will fall, which reduces the current account deficit.

(d) Discussion:
High inflation is highly harmful because it erodes the purchasing power of money, reducing the real value of consumers' savings and disposable income. It causes menu costs (frequent price adjustments) and shoe-leather costs (time spent searching for stable values). High inflation also damages international competitiveness, reducing export demand, and creates business uncertainty, which discourages domestic and foreign investment, harming long-term economic growth.

However, high inflation may not always be completely harmful under certain conditions. For instance, mild inflation can encourage investment and consumer spending, as people buy now before prices rise. It also allows real wage adjustments without nominal wage cuts, which can lower unemployment. If the inflation is caused by strong aggregate demand (demand-pull), it is often a byproduct of rapid economic growth and low unemployment, which are generally positive outcomes.

Part (a) [2 marks]:
- 1 mark for the fall/decrease in value of a currency.
- 1 mark for mentioning it occurs under a floating exchange rate system / due to market forces.

Part (b) [4 marks]:
- 1 mark for identifying a cause (up to 2 causes).
- 1 mark for explaining each cause in relation to the current account.

Part (c) [6 marks]:
- Up to 3 marks for analyzing the impact on exports (cheaper in foreign markets, leading to higher export demand and export revenue).
- Up to 3 marks for analyzing the impact on imports (more expensive domestically, leading to lower import demand and import expenditure).

Part (d) [8 marks]:
- Up to 5 marks for explaining why high inflation is harmful (reduced purchasing power, uncertainty, lower investment, loss of competitiveness).
- Up to 5 marks for explaining why it might not always be harmful or can have temporary positive aspects (byproduct of growth/demand-pull, real wage adjustments, prevents deflationary traps).
- Note: Max 6 marks if only a one-sided discussion is provided.