"and the migrants streamed in on the highways and their hunger was in their eyes, and their need was in their eyes. they had no argument, no system, nothing but their numbers and their needs. when there was work for a man, ten men fought for it—fought with a low wage. if that fella'll work for thirty cents, i'll work for twenty-five. if he'll take twenty-five, i'll do it for twenty."

by including this intercalary chapter, what effect is steinbeck most likely attempting to achieve?
a. providing commentary, separate from the narrative, which illustrates a specific, individual experience with the great depression
b. giving readers a better understanding of the history of the great depression and the events that led to present circumstances
c. carrying the theme of the migrant workers' desperation for work beyond the scope of the joad family
d. breaking from the narrative flow of the joad family's story by relating it to a different historical period