Answer:
c, the signs telling people not to buy from the store
Explanation:
a, is not correct because the line of people outside the store has nothing to do with participating in a boycott.
b, is not correct because the cooperation between whites and African Americans were not shown.
c, is correct because there is a sign in the picture telling people not to buy from the store, if you show any protest or signs it means that person is participating in a boycott.
d, is not correct because the lack of African Americans outside the store means the protests are not going well.
hope this helped.
(edit: brainliest would be appreciated.)
