How many U.S. Senators serve in Congress?

In the United States, the Senate is comprised of two senators from each of the 50 states, which totals 100 senators. This structure is established in the U.S. Constitution to ensure equal representation of each state in the federal government, regardless of population size. Each senator serves a term of six years, with approximately one-third of the Senate up for election every two years.

The other options reflect misunderstandings of the composition of Congress. For instance, the figure of 50 might suggest one senator per state, which is incorrect as each state has two. The number 435 refers to the total number of representatives in the House of Representatives, not the Senate. Lastly, 200 has no specific significance in terms of U.S. legislative structure. Hence, the correct answer, reflecting the actual count of U.S. Senators in Congress, is 100.