Question

What was the goal of President Truman’s policy of containment?
to liberate as many Communist countries as possible
to prevent Communism from spreading in the United States
to construct a wall to hold Communism within its 1947 borders
to stop Communism from spreading to non-Communist countries

Answer 1

to stop Communism from spreading to non-Communist countries

(Containment aimed to prevent Soviet/global Communist expansion, not to roll it back inside existing Communist states.)