Which best explains how imagery contributes to the meaning of this passage

THE ANSWER IS (I don’t know feel free to share with others in the comments)

A. It gives readers a sense of grasping for something that can’t be caught

B. He creates a clear picture of what people at home felt about the Vietnam war

C. It helps readers understand what the narrator‘s dad must be feeling

D. It illustrates the difference between the soldiers and the protesters