Answer:
- A.
Step-by-step explanation:
The one that best explains how the point of view affect the tone of this passage is letter "A" that says"It lends some insight that makes the narrator sympathetic and credible".
Because the narrator is showing through his words that he knows the person he's describing. That is why he says "he didn't say anymore, but we've been unusually communicative in a reserved way (...)"