Question

the main reason for the passage of the national security act was to
separate the armed forces into different departments.
enable the nation to meet the challenges of the cold war.
prevent labor unions from striking during times of war.
desegregate each branch of the nations armed forces.

Explanation:

The National Security Act of 1947 was passed during the early - Cold War era. Its main goal was to restructure the U.S. military and intelligence apparatus to better face the challenges of the Cold War, such as the threat from the Soviet Union. Separating the armed forces was a part of the act but not the main reason. Preventing labor - union strikes and desegregating the armed forces were not the main purposes of this act.

Answer:

B. enable the nation to meet the challenges of the Cold War.