The Joint Chiefs of Staff serves as the military staff for which individual?

The Joint Chiefs of Staff acts as the principal military advisory body to the President of the United States, the Secretary of Defense, and other senior officials within the Department of Defense. While the Secretary of Defense manages the military and makes key strategic decisions, the Joint Chiefs of Staff provides military advice, operational support, and strategic guidance to assist in formulating national defense policies. The authority of the Joint Chiefs primarily resides in their function to advise the Secretary of Defense, which is essential for ensuring that military operations align with overall government strategy. Therefore, the correct choice highlights the relationship between the Joint Chiefs of Staff and the Secretary of Defense, showcasing the critical role they play in national defense decision-making.