(A) ** isolationists
(B) neutralists
(C) nationalists
(D) militarists
EXPLANATIONS BELOW
Concept note-1: -When World War I broke out in July 1914, the United States actively maintained a stance of neutrality, and President Woodrow Wilson encouraged the U.S. as a whole to avoid becoming emotionally or ideologically involved in the conflict.
Concept note-2: -Isolationists believed that World War II was ultimately a dispute between foreign nations and that the United States had no good reason to get involved. The best policy, they claimed, was for the United States to build up its own defenses and avoid antagonizing either side.