Final answer:
The U.S. aimed to contain communism in both the Korean and Vietnam Wars but had limited success. The U.S. avoided the spread of communism in Korea but ultimately experienced failure in Vietnam, leading to a reassessment of its foreign policy. Option B.
Step-by-step explanation:
The U.S. involvement in the Korean and Vietnam Wars was driven by the policy of containment, which was aimed at preventing the spread of communism. In the case of the Korean War, the conflict ended with the Korean peninsula still divided, essentially maintaining the status quo.
Although containment was partially successful in Korea, it did not result in a decisive military victory.
By contrast, in Vietnam, the U.S. support of South Vietnam against the communist North reflected a deeper involvement in a civil conflict.
This engagement is widely viewed as a failure to achieve military and political objectives.
The guerilla warfare tactics of the Viet Cong and the North Vietnamese Army, coupled with the perception of the war among the American public and its representation in media, contributed to a loss of public support and a reassessment of U.S. foreign policy.
The conclusion that can be drawn from the U.S. involvement in both wars is option B) Containment of communism.