I believe the answer is: Integrative theory
Integrative theory view that society could never be exist unless each individuals fulfill their own roles. These happen because humans are unique in terms of our talent/capabilities. So in order to crate a well functioning society, different humans had to integrate our different capability to operate it.
Answer:
A is the answer of that questions
On June 27, 1950, President Harry S. Truman announces that he is ordering U.S. air and naval forces to South Korea to aid the democratic nation in repulsing an invasion by communist North Korea. The United States was undertaking the major military operation, he explained, to enforce a United Nations resolution calling for an end to hostilities, and to stem the spread of communism in Asia. In addition to ordering U.S. forces to Korea, Truman also deployed the U.S. 7th Fleet to Formosa (Taiwan) to guard against invasion by communist China and ordered an acceleration of military aid to French forces fighting communist guerrillas in Vietnam.
I'm pretty sure it is: " D) None of the above "