Answer:
An embargo is often used d. For political reasons
Step-by-step explanation:
Trade of goods between countries increases the economy of the country. An embargo is a "government order" under in which trade of goods between countries or specific goods gets restricted. It is usually a result of an unfavorable political or economic condition between two or more countries. This decision is usually taken to force the governing people of the country to act on the issue because of which embargo decision was taken.
Embargo can have negative effects on the country's economy. Like a trade embargo would restrict export and import from or to country/countries.