The correct answer is C. Chicanos.
"Chicano" was originally a pejorative (negative) term for Mexican Americans, especially the ones with an immigrant backgound.
Within the Mexican Americans there was a need for a new identity, and a feeling (both from within and from outside) that they were different both from the Mexican and from other Americans.
This identity, along with a fight for better fighters' rights, was at the heart of the Chicano Movement, which began in the 1940s. Cesar Chavez was an important activist for this movement.
Giant dust storms swallowed the Great Plains. Yet as the crisis deepened, Herbert Hoover struggled to respond to the nation's problems. As a result of Hoover's failed response, in 1932 Americans would turn to a new leader and increased government intervention to stop the depression.
A free market system is where the government has no rule over the market system and canot make eny rules on it