Which type of trade barrier is explicit or Often duties and taxes are imposed on cars that are imported from other countries. What types of incentives are these duties and taxes? Used for political purposes?

Tariffs and non-tariff are the barriers of trade.

Explanation:

Tariffs and non-tariff barriers to trade such as import licenses, Export licenses, Import quotas, Subsidies, Voluntary Export Restraints, Local content requirements, Embargo,  Currency devaluation and Trade restriction are type of trade barrier and taxes that are imposed on cars and other items that are imported from other countries. These incentives are taken to decrease the import of cars from other countries and motivate the use of local manufactured cars.

c or d both can be the answer

to extend a country’s power and influence