The answer is B.
Explanation:
The statement that best expresses the central idea of the text is, 'Despite the hostility toward migrant workers and their difficult life experiences, their work is essential to the success of the nation’s agriculture industry.'
In this article Steinbeck speaks about the new gypsies (who are migrant workers) their backgrounds, lifestyle and how they are beneficial and necessary to the harvesting of crops each year. He mentions that there is no other labour to pick and harvest crops therefore without these workers the crops would rot and perish making them crucial to the agricultural industry.
He also talks about how these workers are not well received by the locals and are in fact hated because of their lifestyle and how they affect neighbourhoods they take up residence in.
The best quote from the article that sums up these ideas is, "The migrants are needed, and they are hated...They are never received into a community nor into the life of a community. Wanderers in fact, they are never allowed to feel at home in the communities that demand their service.