What is the constitutional duty of the military?

• A. To ensure national survival, defend lives and property, and promote vital interests at home and abroad.
• B. To manage the economy and implement fiscal policy.
• C. To conduct all international diplomacy for the United States.
• D. To regulate internal security police nationwide.

Answer: (A)

The main idea this question tests is the military’s purpose to defend the nation. The constitutional duty of the armed forces is to deter and defeat external threats, preserve national sovereignty, and safeguard citizens, property, and vital interests at home and abroad. This purpose guides how the military is organized and used: protecting the country and supporting national security objectives, including obvious actions in times of war or crisis.

The other functions described aren’t the military’s primary constitutional role. Managing the economy and fiscal policy are civilian responsibilities handled by elected leaders and executive agencies. Diplomacy is chiefly conducted by civilian officials and the State Department, with the military playing a supporting role as needed. Regulating internal security nationwide is primarily the domain of civilian law enforcement, with the National Guard stepping in only in specific circumstances.