Answer: A. To show how farmers and migrants suffered during the Dust Bowl
Step-by-step explanation:
The Grapes of Wrath (1939) is a realist novel, written by John Steinbeck. It describes a poor family's struggle during agricultural changes and financial hardships caused by drought.
The Joads family is forced to abandon their Oklahoma home and land. They head towards California to seek jobs, hoping for better future. Through this example, Steinbeck demonstrates the suffering farmers and migrants went through during the Dust Bowl, a period of severe dust storms during the 1930s.