What is the main role of the President?

The main role of the President involves serving as the head of state and government, which means the President is both the ceremonial leader of the nation and the chief executive responsible for enforcing laws and administering government functions. This dual responsibility includes guiding national policy, making key governmental decisions, and representing the country in diplomatic matters. Additionally, the President is the commander-in-chief of the military, which grants authority over military operations and national defense.

In contrast, the interpretation of the law is primarily the responsibility of the judiciary, not the executive branch led by the President. While the President can propose new laws, the actual creation of laws is the function of Congress. Oversight of the budget, although part of the President's responsibilities, is not as central to the role as the duties of being the head of state and commander-in-chief. Thus, the comprehensive nature of the President’s responsibilities aligns with the correct choice, making it the best representation of the President's main role.