The correct answer is The page number only
Since you've already mentioned who the author is, you don't have to mention him again. The book title would only be added if you're using multiple sources from the same author. If only one, then the page number only.
Answer:
A. to show how knowledge influences people’s thoughts and actions
Explanation:
Although both B and C would support the argument, I believe the correct answer in this case would be A.
The best answer for this question would be:
The author’s wordings in the excerpt describe how his
experience was during the Vietnam war, he was young but was afraid to face
reality that his fellow comrades were dying in front of him. He describes how
in stories people can be able to twist what had happened to them, on the other
hand you could honestly tell them the true events that had happened.
