Vivien Is Going to Give a Speech About the Greek

Vivien is going to give a speech about the Greek system on her college's campus. She knows that in order to make her information useful to her audience, she should find out ahead of time how many students in her class are in fraternities and sororities. Which demographic characteristic does Vivien need to assess?

A) Cultural diversity
B) Political affiliation
C) Attitudes
D) Group membership