The correct answer is B) The effects of the rise of large corporations. The Grapes of Wrath is an American realist novel written by John Steinbeck and published in 1939. The story is built during the Great Depression and the novel focuses on the Joads, a poor family who has to move from Oklahoma to California due to the lack of money. The Grapes of Wrath is frequently read in American high school and college literature classes due to its historical context and enduring legacy.