By sitting in protest at an all-white lunch counter in Greenman, South Carolina, four college students brought nationwide attention to the issue of civil rights. What action did the four college students take to bring attention to the issue of civil rights?
1) They organized a march in Washington, D.C.
2) They wrote a letter to the President of the United States.
3) They boycotted segregated buses in their city.
4) They sat at an all-white lunch counter.