Which best explains how the point of view affects the tone of this passage?
a. it lends some insight that makes the narrator sympathetic and credible.
b. it establishes some important background information about the narrator.
c. it conveys the narrator's lack of objectivity and impatience with bores.
d. it introduces the narrator as a detail-oriented commentator on the action.

Are you referring to this question?
Read the following excerpt from The Great Gatsby:

He didn't say any more, but we've always been unusually communicative in a reserved way, and I understood that he meant a great deal more than that. In consequence, I'm inclined to reserve all judgments, a habit that has opened up many curious natures to me and also made me the victim of not a few veteran bores.
Which best explains how the point of view affects the tone of this passage?
A.It conveys the narrator's lack of objectivity and impatience with bores.
B.It establishes some important background information about the narrator.
C.It lends some insight that makes the narrator sympathetic and credible.
D.It introduces the narrator as a detail-oriented commentator on the action.

If so, then the answer would be letter C.It lends some insight that makes the narrator sympathetic and credible. 

The setting is new mexico