Embargoes, quotas, and standards are tools that countries use a. to reduce exports b. to punish other countries c. to restrict imports d. to raise prices of domestic goods.

c. to restrict imports

Embargo are an official bans of trade with a particular country.  A quota on the other hand is partial limitation of imports, usually in terms of quantity that can be imported or exported into a particular quantity. a country can also impose certain standards on goods, which may limit importation e.g declaring vehicles with certain standards alone can should be imported. it is more common in the technology sector.