Answer :
An import quota is C) a legal limit on the amount of a good that can be imported into a country. This differs from a tariff which is a A) tax on import quantities above the legal limit, or at all levels.
C) legal limit on the amount of a good that can be imported into a country.
As a trade restriction, an import quota establishes a physical limit of the quantities (or the value) of a product or good that can be imported from foreign countries in a given period of time.
Some of its purposes are to protect domestic industries by restricting foreign competition, to direct the foreign exchange resources of the country for more high-priority import items, to reduce the balance of payments deficit faced by the country that exports the product, among others.