Who is in charge of the executive branch?

The President is in charge of the executive branch of the United States government. The executive branch is responsible for enforcing laws, conducting foreign policy, and overseeing the federal administration. This role is outlined in the Constitution, which grants the President the authority to serve as the head of state and the commander-in-chief of the armed forces.

The President's leadership is critical for executing laws passed by Congress, which is the legislative branch. The President also has the power to issue executive orders, appoint federal officials, and negotiate treaties (with the Senate's approval), thus having a significant impact on domestic and international affairs. This clearly establishes the President's leadership and control over the executive branch, making this choice the correct answer.

The other choices represent different roles within the government: the Chief Justice presides over the Supreme Court and interprets laws, the Senate Majority Leader leads the majority party in the Senate, and the Speaker of the House presides over the House of Representatives. None of these positions have authority over the executive branch.