How did the civil rights movement change in the mid- to late sixties?

How did the civil rights movement change in the mid- to late sixties?

a. It cooled off, since African Americans had achieved most of their social goals.
b. The movement became even more committed to nonviolent resistance to racism.
c. It became more militant and considered violence to force social change.
d. It focused less on protest in the streets and more on progress through the courts.
e. The movement focused less on domestic social change and more on international social change.

ANSWER
C