A committee made up of the senior officer from each branch of the armed services is called what?

The correct designation for a committee composed of the senior officer from each branch of the armed services is the Joint Chiefs of Staff. This group plays a crucial role in the unified command structure of the U.S. military, providing strategic direction and advice to the President and the Secretary of Defense on military matters.

The Joint Chiefs of Staff includes the highest-ranking officers from the Army, Navy, Air Force, Marine Corps, and the National Guard Bureau, which ensures that each branch is represented in discussions regarding national defense and military strategy. Their collective experience and leadership help in coordinating efforts across different military branches, thereby enhancing overall effectiveness in strategy and operations.

The other options refer to different entities or concepts not directly related to the composition of senior military leadership. The National Security Council is primarily focused on advising the President on national security and foreign policy issues, while Navigational Aid pertains to support systems used for navigation, and Port Security relates to measures taken to protect ports against threats. These options do not capture the essence of a committee involving senior military officers in the way that the Joint Chiefs of Staff does.