Question

How does the narration affect the narrator’s credibility in this excerpt?
His honesty renders him earnest and genuine.
His slang makes him seem youthful and intriguing.
His French jargon makes him seem international.
His explanations depict him as a bit defensive.

Answer 1

I believe that the correct answer that affects the narrator's credibility in this excerpt is that his explanations depict him as a bit defensive.
He keeps explaining why he had a rough patch, but that he was always good prior to that. 

Answer 2

The correct answer is D) his explanations depict him as a bit defensive.

The narration affects the narrator’s credibility in the excerpt because his explanations depicts him as a bit defensive.

The statement refers to an excerpt of “Infinite Jest”. The narrator’s credibility is affected when he says “I cannot make myself understood. I am not just a jock, I said slowly. Distinctly. My transcript for the last year might have been dickied a bit, maybe, but that was to get me over a rough spot.” So he explanations depicts him a bit defensive, affecting his credibility by the way he is responding.

“Infinite Jest” is a novel written by David Foster Wallace in 1996.