Answer: Categories are non-exhaustive
Step-by-step explanation:
An event collection is denotes as non-exhaustive if occurrence of none of them is possible. None of the event from the lot occurs even once at any point of time.
According to the question, flaw in the question is based on non-exhaustive categories that is presented in the form of opting between the democrats and Republicans as they don no have the possibility to occur event once among the students of university.