Which of the following roles belongs to a U.S. Representative?

A U.S. Representative plays a critical role in the legislative branch of the government, specifically in the creation and approval of laws. This role is foundational to the functioning of Congress, which consists of two chambers: the House of Representatives and the Senate. Representatives are tasked with proposing, debating, and voting on various pieces of legislation that impact the country. Their responsibility is to represent the interests and needs of their constituents while also considering the broader implications of laws on the nation.

In contrast, the other options describe roles that are not applicable to U.S. Representatives. Judging court cases is a function of the judicial branch, where judges and justices preside over legal cases. Serving as President is an executive role, distinct from the legislative responsibilities held by representatives. Leading the military is a power typically associated with the President, who serves as the Commander-in-Chief, and not a role designated for members of Congress. Thus, making laws is indeed the primary and correct function of a U.S. Representative.