The narrator is Stephen Fry
I'd say B, lol, but if theres an all of the above option i'd recommend that
If you're going to ask a question like this please provide more information as to the context, otherwise I cannot help you.
also, if you're just confused as to what that question means, it's basically saying
"how would you describe the way that these characters have changed"
and you could be like
"____ has changed in the sense of...", repeat
or
"they have changed a lot because that they have all matured, especially due to when they experienced ______"
<u>D) He sought his former accustomed fear of death and did not find it. "Where is it? What death?" There was no fear because there was no death.</u>
When a person lives and behaves with morality, that is to say, with the concern with what's right and what's wrong, and knows for sure that he or she has behaved in a "right" way, it's highly probably he or she won't fear death.
This is so because there is nothing they can be blamed for, nothing they can be punished for in the "after-life". They have the comforting reassurance that God or any "supreme force" will judge them accordingly. This is what happens with the narrator, there's no fear in him because he had morality, and therefore there's no "death" (suffering), there's only light. This is why option D exhibits the interconnected themes of morality and mortality.