Correct Option: A

Non-tariff barriers to trade (NTBs) are trade barriers that restrict imports but are not in the usual form of a tariff. Some common examples of NTB’s are anti-dumping measures and countervailing duties, which, although they are called “non-tariff” barriers, have the effect of tariffs once they are enacted. Their use has risen sharply after the WTO rules led to a very significant reduction in tariff use. Some non-tariff trade barriers are expressly permitted in very limited circumstances when they are deemed necessary to protect health, safety, or sanitation, or to protect depletable natural resources. Types of a non-tariff barrier to trade include specific limitations on trade: quotas, import licensing requirements; Proportion restrictions of foreign to domestic goods (local content requirements); Minimum import price limits; and embargoes. An import quota is a limit on the quantity of a good that can be produced abroad and sold domestically. It is a type of protectionist trade restriction that sets a physical limit on the quantity of a good that can be imported into a country in a given period of time. If a quota is put on a good, less of it is imported.