What is one way the legislative branch can check the executive branch?

The legislative branch can check the executive branch by rejecting presidential appointments, which is a significant power granted to Congress. This process occurs during the confirmation of appointments made by the president for key positions such as cabinet members, ambassadors, and federal judges. If the Senate does not approve a candidate, the president cannot enforce their choices, thereby limiting the executive's influence over the government and ensuring that the legislative branch has a role in the appointment process.

This mechanism reinforces the system of checks and balances, ensuring that no single branch of government holds excessive power. The act of rejecting appointments allows Congress to maintain oversight over the executive’s decisions and actions.

The other options reflect powers that are associated with different branches of government. The power to declare laws unconstitutional is held by the judicial branch, specifically the courts in exercising judicial review. Appointing Supreme Court justices is a power possessed by the executive branch, specifically the president, and conducting judicial reviews is also a function of the judicial branch itself. These roles affirm the distinct functions of each branch rather than illustrating a check by the legislative branch on the executive.