Question

who was cesar chavez?
○ an activist who protested at alcatraz island
○ an organizer of the american indian movement
○ a leader of the black power movement
○ a cofounder of the united farm workers

Explanation:

Cesar Chavez was a key figure in advocating for farm workers' rights in the U.S. He co-founded the United Farm Workers union to fight for better wages and working conditions for agricultural laborers. The other options refer to leaders of different civil rights/activist movements: Alcatraz protests and the American Indian Movement are linked to Indigenous activists, and the Black Power movement focused on Black liberation.

Answer:

a cofounder of the United Farm Workers