Quick questions on The four methods of protection and their effects: HSC Economics Topic 1

A subsidy shifts the domestic supply curve to the right, because producers can profitably supply more at every price once their effective cost is reduced by the per-unit payment. This narrows or closes the gap between the domestic price and the world price without raising the price consumers pay, at the cost of the subsidy paid from the government budget.

A tax on imports. Raises the domestic price of the imported good to World price + tariff. Reduces import volume, transfers surplus from consumers to domestic producers AND to the government (tariff revenue), and creates a deadweight loss (the two triangles: production distortion and consumption distortion).

A direct government payment to domestic producers per unit produced. Lowers the producers' effective cost of production, shifting the domestic supply curve to the RIGHT. Unlike a tariff, consumers keep paying close to the world price - the cost falls on TAXPAYERS through the government budget, not on consumers at the checkout.

A quantity limit on imports, fixed regardless of price. Raises the domestic price in a similar way to a tariff (restricting supply forces the price up to clear the market), but the revenue from the price rise on the remaining imports - the "quota rent" - goes to whoever holds the import licence (often a foreign exporter or a domestic importer), NOT to the government.

Require a minimum proportion of domestic inputs in production (for example, a minimum share of Australian-made components in a defence vessel or a vehicle). Distort the firm's INPUT MIX rather than directly taxing the final good, forcing production away from the lowest-cost combination of resources and raising unit costs, most commonly seen in defence and automotive procurement.

"Australia's average effective rate of assistance to manufacturing fell to around 4 to 5 percent by 2024" or "the Naval Shipbuilding Plan's local content rules" earns marks a vague claim like "Australia protects some industries" cannot.

"Identify/outline" wants the method named with a quick effect; "explain" wants the mechanism (the shift, the price/quantity change, who bears the cost); "analyse/evaluate/assess" wants a genuine comparison across methods and a reasoned judgement.