Question

one possible use for foreign aid is for one country to help another

improve military power.

reduce tariffs.

remove trade barriers.

change policies.

Explanation:

Foreign aid can be used to influence a country to change its policies (e.g., economic, social, or political policies) to align with the donor's interests or for developmental goals. Improving military power is not a typical primary use of foreign aid (humanitarian or developmental aid focuses less on military). Reducing tariffs and removing trade barriers are more related to trade agreements rather than foreign aid's primary use. So the most appropriate option is changing policies.

Answer:

D. change policies.