What is one of the President's informal powers?

The correct choice highlights the President's ability to issue executive orders as one of the informal powers. Unlike formal powers, which are explicitly outlined in the Constitution, informal powers allow the President to take actions based on historical precedent, political pressure, and the need to respond to crises or enact policy changes.

Executive orders enable the President to manage the operations of the federal government and direct how federal agencies enforce laws. This power has been used by presidents to implement significant policy changes without the need for congressional approval, illustrating the broad scope of executive authority. While this power is not explicitly mentioned in the Constitution, it arises from the President's role as the chief executive, allowing them to take direct action when legislative action may not be feasible or politically viable.