Concept:A tariff is a tax charged on goods brought into a country from abroad.Explanation:A tariff is a compulsory levy imposed by the government on imported goods.It is collected at the point of entry, usually at the border or port.The main purpose is to raise revenue and protect local industries from foreign competition.Tariffs are not charged on goods that are produced and sold within the country.They are also not taxes on workers or foreign exchange earnings.In this context, a tariff applies specifically to imported goods only.Answer:C. imported goods only