Final answer:
The United States' prohibition on the import of sugar and cigars from Cuba is an example of a(n) embargo, which is a governmental order that restricts commerce with a specified country. Therefore, the correct Option is 1).
Step-by-step explanation:
If the United States has prohibited the import of sugar and cigars from Cuba, this is an example of a(n) embargo. An embargo is a governmental order that restricts commerce with a specified country or the exchange of specific goods. These are usually created as a form of political punishment to provoke a change in policy in the targeted country. Options such as an export ban, protective quota, tariff, and limit agreement involve different trade restriction instruments.
An export ban is a specific prohibition on the export of certain goods to a particular country, while a protective quota is a limitation on the quantity of goods that can be imported into a country to protect domestic producers. A tariff is a tax imposed on imports to increase their price and protect domestic industries. A limit agreement is a voluntary export restriction by the exporting country. Given the description that the United States has specifically prohibited the import of goods from Cuba, this aligns with the definition of an embargo. Therefore, the correct option in the final answer would be option 1) embargo.