Which term defines a tax that a country’s government adds to the cost of imports?
a) free-trade tax b) tariff c) quota d) export tax

B) tariff

Explanation:

A tariff is collected by the governments of the other countries as an import duty towards the cost of the country's valuable resources. As the price gets increased and more domestic companies are willing to produce the goods so as to balance the terms of trade and to increase their domestic production and demand in the global markets.

The answer is c, i, iii, and iv. this is because farming and mining deal with harvesting raw materials, construction work falls under manufacturing, and piloting a plane is a service. ii is wrong because making bread is using  raw materials to produce goods, which would fall under the secondary sector, not primary.