Question

in 2010, mexico imposed a limit of 250,000 tons of sugar that could be imported into mexico. quota tariff embargo

Explanation:

A quota is a government - imposed limit on the quantity of a good that can be imported. In this case, Mexico set a limit of 250,000 tons on sugar imports, which fits the definition of a quota. A tariff is a tax on imported goods, and an embargo is a complete ban on trade with a country or on a particular good, so neither of these fit the situation here.

Answer:

A. Quota