What is one reason steinbeck uses parallelism in the grapes of wrath?
a. to detract from disturbing images
b. to create a puzzle for the reader to decipher
c. to downplay the contrast of opposing ideas
d. to develop his tone

The answer is: D.To develop his tone

In “The Grapes of Wrath” John Steinbeck shows the difficult situation that the farmers in Oklahoma had during the great depression, how they gain huge debts with the banks for the economics problems of the time and uses the parallelism to highlight the contrast of opposing ideas developing the tone of this novel.  

the answer to "what does the narrator realize by the end of the story" is b.

#1  sara was always tasked with selecting birthday presents for her friends and family because everyone admired her  impeccable taste. 

impeccable (adj): perfect, flawless

#2  they moved to the united states many years ago, but their  insular  attitudes made it difficult for them to socialize. 

insular (adj): isolated; separate

#3  the professor explained the  semantic  relationship between the two nouns used in the sentence. 

semantic (adj): related to words or the meanings of words 

happy to : )