Question

embargoes, quotas, and standards are tools that countries use
to reduce exports.
to punish other countries.
to restrict imports.
to raise prices of domestic goods.

Explanation:

Embargoes, quotas, and standards are trade - related tools. Embargoes can ban trade with certain countries, quotas limit the quantity of imported goods, and standards can act as a barrier to imports by setting requirements that imported goods may find hard to meet. Their primary purpose in the context of international trade is to restrict the amount of goods coming into a country (imports). Reducing exports is not their main use (exports are about sending goods out, these tools are more about controlling what comes in). Punishing other countries is a secondary or less common use compared to trade restriction for economic or regulatory reasons. Raising domestic goods' prices is a side - effect in some cases, not the main purpose of these tools.

Answer:

C. to restrict imports.