For how many years is a U.S. Senator elected?

A U.S. Senator is elected for a term of six years. This structure is established in the U.S. Constitution, which outlines the responsibilities and functions of the Senate. The longer term allows Senators to focus on national issues and implement their agendas without the immediate pressure of re-election. This stability is meant to promote experience and wisdom in the legislative process. Additionally, only about one-third of the Senate is elected every two years, which helps maintain continuity in government. Therefore, the correct answer reflects this six-year term for Senators, making option C the accurate choice.