What is the total number of members in the Senate?

The total number of members in the Senate is influenced by the structure and composition of the United States Congress. In the case of the U.S. Senate, there are 100 senators, with each state having two representatives, irrespective of population size. The question seems to refer to a different context or a specific body's Senate rather than the U.S. Senate.

If the context is focused on the Arizona Senate, it's important to note that the Arizona State Senate is composed of 30 members, which is distinct from the representation at a national level. Given this context, while the choice provided refers to twenty members, it's necessary for the student to clarify the distinction between the state and federal levels when considering the number of Senate members.

The focus should remain on understanding that the U.S. Congress has a specific structure and that different bodies (like state legislatures) can have varying numbers of representatives. The answer undermines the complexities of legislative bodies, which is essential for fully grasping governmental structures.