Answer:
"The unique nature of California agriculture requires that these migrants exist,
and requires that they move about. Peaches and grapes, hops and cotton
cannot be harvested by a resident population of laborers." (Paragraph 3)
B. "The migrants are needed, and they are hated. Arriving in a district they find the
dislike always meted out by the resident to the foreigner, the outlander."
(Paragraph 4)