Answer: It is a social institution
Explanation:
I believe there are only 3 members.
The correct answer is letter A. The belief that Senators need to be able to express themselves without constraints. The atmosphere in the Senate is so informal because is the belief that Senators need to be able to express themselves without constraints. Without constraints, there'll be more arguments to talk about.
The answer is C because it's the only one that talks of a gender.
Hope it helps.
