Which action is an example of the united states using economic influence as
a tool of foreign policy?
a. appointing an ambassador to represent u. s. interests in a country
b. refusing to trade with a country until it improves its human rights
record
c. creating an alliance with a country for mutual protection from
invasion
d. sending troops into a country to support a democratic revolution

answer is: b

The correct answer is Option B. Refusing to trade with a country until it improves its human rights  record.

Explanation:  

As one of the world’s most powerful trading partners, the United States has the power to shape trade relations in many parts of the world. Examples are the economic embargos that the United States has maintained against countries like Cuba and Iran because it does not support these regimes and wished to assert pressure for regime change.  But the embargos are also costly to the United States. For example, it is estimated that the embargo on Cuba costs the United States economy $1.2 billion per year in lost exports and sales.