What was the purpose of the policy of containment after World War II? to confine communism to the Soviet Union
to rebuild the cities of Europe after World War II
to end the Cold War between the United States and the Soviet Union
to stop the spread of communism beyond nations where it was established

Containment was a foreign policy strategy followed by the United States during the Cold War. First laid out by George F. Kennan in 1947, the policy stated that communism needed to be contained and isolated, or else it would spread to neighboring countries. American foreign policy advisors believed that once one country fell to communism, each surrounding country would fall as well, like a row of dominoes. This view was known as the domino theory. Adherence to the policy of containment and domino theory ultimately led to U.S. intervention in Vietnam as well as in Central America and Grenada.

Explanation:

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

answer to ur question is college b