I need help please i tried everything!!

Explanation:

Informally, the Truman Doctrine was generalized to become the foundation of American Cold War policies in Europe and around the world. It changed American foreign policy against the Soviet Union from détente (tension reduction) to containment (as proposed by diplomat George Kennan).

Explanation:

The Truman Doctrine was informally extended to become the basis of American Cold War policy throughout Europe and around the world. It shifted American foreign policy toward the Soviet Union from détente (a relaxation of tension) to a containment of Soviet expansion as advocated by diplomat George Kennan

So, therefore your answer is C.

b. ensure mutual protection from communism.

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