How many U.S. Senators are there in total?

The total number of U.S. Senators is 100. This is established by the U.S. Constitution, which allocates two Senators to each of the 50 states, regardless of the state's population. This structure was designed to ensure equal representation for each state in the Senate. Therefore, with 50 states each represented by 2 Senators, the total comes to 100.

The other options present incorrect figures because they either miscount the number of states or the representation per state. For instance, the number 50 reflects the number of states rather than Senators, while 200 might suggest an incorrect doubling of the total number of Senators per state. The figure 535 represents the combined total of both the House of Representatives and the Senate, which includes 435 Representatives and the 100 Senators, but does not specifically answer the question about the number of Senators alone.