"what key principle of the teachings of the nation of islam was the opposite of the goal of the civil rights movement in the south? "

the Nation of Islam believed in separation of the races

The civil rights movements was agitating for equal treatment of all races and especially an end to oppression of people of color. This ideal is incompatible with the nation of Islam teachings of separation of all races.

A

just took practice on edge

so the other person is right