Question

____ are limitations on the quantity of certain types of goods that can be imported over a period of time. export quotas subsidies import quotas embargo levels tariffs

Explanation:

Import quotas restrict the quantity of goods that can be imported over a time - period. Export quotas limit exports, subsidies are financial aids, embargoes are bans on trade, and tariffs are taxes on imports/exports.

Answer:

C. Import quotas