In This Side of Paradise, to what club did Amory belong?

the Triangle Club

Phi Sigma Honors Society

the Rotary Club

the Kiwanis Club

The Triangle Club.

Explanation:

Amory is a character from Scott Fitzgerald's debut novel "This Side of Paradise", a college student. The story revolves around the lives of youths after the First World War, and the morality they follow.

Amory had just joined the University of Princeton, where he along with his new roommates Kerry and Burne Holiday start their academic lives. They also tried to get into much of the college life as they can, going to parties and all. Amory even joined the Triangle Club, accompanying them in their journey across the country.