How many senators are there in the United States Congress?

The United States Congress is composed of two houses: the House of Representatives and the Senate. The Senate is made up of 100 senators, with each state represented by two senators, regardless of its population size. This structure is part of the federal system established by the U.S. Constitution, which aims to ensure that all states have an equal voice in this legislative body.

Thus, the correct answer reflects the total number of senators across all states. The other options do not correspond to the actual number of senators: 50 pertains to a misunderstanding related to state counts, 435 refers to the total number of representatives in the House of Representatives, and 200 is not relevant to the composition of either house.