Answer:c. tariff
Explanation: What is a Tariff?
A tariff is a tax which is imposed by one state on all the goods and services that get imported into their state from another state.
How a Tariff Works
Tariffs are crucial and are used to put restrictions on imported goods and services, these high prices makes business less interested in buying from other states.
There are two types of tariffs: A specific tariff which is based on paying a fixed fee on the imported product.
An ad-valorem tariff which is dependent on the value of that item.
Governments usually imposes tariffs in order to makes sure that domestic industries are protected from foreign competition