The truman doctrine and the marshall plan were important because both were part of the policy of containment. what was the primary strategy of containment?
a. moving troops to the area to keep a country independent
b. giving aid to keep a country independent
c. providing services such as voice of america to keep a country independent
d. providing food and necessities by airlift

B. giving aid to keep a country independent.

Explanation:

This is the best description of the policy of containment. This was a policy that was adopted by the United States in order to stop the spread of communism. The United States worked with its allies in order to try to stop and dismantle communism after World War II.

This included both the Marshall Plan and the Truman Doctrine. The Marshall Plan consisted of giving foreign aid to Western Europe in order to help with its economic recovery. The Truman Doctrine consisted on providing financial aid to nations threatened by communism, such as Greece and Turkey.