Final answer:
Free Trade Agreements are not a method used to discourage trade; they aim to reduce trade barriers between member countries. In contrast, tariffs, quotas, and subsidies are tools that can be used to interfere with international trade.
Step-by-step explanation:
Among commonly utilized approaches by governments to interfere in international trade, the option that is NOT used to discourage trade is C) Free Trade Agreements. The other options listed, such as A) Tariffs, B) Quotas, and D) Subsidies are indeed tools used by governments to either encourage domestic production or restrict imports.
Tariffs are taxes on imported goods, quotas are limitations on the quantity of goods that can be imported, and subsidies are financial support given to domestic industries. Free Trade Agreements, however, aim to reduce barriers and encourage trade between the member countries.