A tax on automobiles imported into the United States that raises prices on imported vehicles to make the price of cars produced in the United States more competitive is a(n) ______; a tax on all oil imported into the United States, which is implemented to raise money for the U.S. government, is a(n)
A. import barrier; income tariff
B. embargo agreement; income tariff
C. quota tariff; revenue tariff
D. revenue tariff; protective tariff
E. protective tariff; revenue tariff

In an international trading, the protective tariff is defined as the tariff that is made to protect the domestic production from the from the foreign competition. This is done by raising the price of the goods that are imported to the United States.

A revenue tariff is defined as the tariff that is imposed on imported goods and is imposed mainly to increase the revenue of the government and not to provide protection to the domestics production or domestic industries.

Thus, in the context, the automobiles which are imported to the US is the protective tariff and the palm oil imported to the US to raise the government revenue is called a the revenue tariff.