Answer:
C) It brought the U.S. into the Pacific War.
Explanation:
Initially, the United States believed that being isolated from international
affairs (also known as Isolationism) that did not affect them was ideal to avoid further loss; especially after World War I and The Great Depression during the 1930s. However, when Japan attacked Pearl Harbor, the U.S. could not tolerate it anymore and decided to enter World War II to side with the Allied Powers against the Axis Powers (Japan, Germany, and Italy).