Final answer:
Cesar Chavez was a prominent figure in the labor movement, battling for the rights of farm workers through unionization and nationwide support achieved through nonviolent activism and consumer boycotts in the 1970s. The correct answer is option c.
Step-by-step explanation:
Cesar Chavez was a leading activist for the labor movement, specifically fighting for the rights of farm workers. In the 1970s, his efforts alongside Dolores Huerta and the United Farm Workers union contributed to unionizing 50,000 workers and demanding fair employment contracts for these primarily Latino/Latina migrant workers. Chavez adopted strategies from the African American civil rights movement, such as nonviolent protest, hunger strikes, and consumer boycotts, to bring national attention and support to the plight of migrant farm workers. These tactics were effective in pressuring grape growers to recognize the union and improve pay and benefits for the laborers.