What is the effect of the structure in the essay "loneliness .  .  .  an american malady" by carson mccullers?

a. 

the clear and concise narration allows the reader to draw connections across the essay.

b. 

the stream-of-consciousness narration allows a more intimate connection to the reader.

c. 

the melancholic thoughts in the narration create a frustrated and incoherent mood.

d. 

the sense of moral isolation creates a need to belong among emotionally detached readers