It makes sense; but there are two phrases there that could be divided to make the sentence flow better.
“I am not happy with myself, nor will I ever be.”
The correct answer is E - all of the above. An author's voice is made up by all of the answers listed. It allows the reader to understand the author, the tone, and the purpose of the story/poem.
The correct answer is D.
In this excerpt from "Sir Gawain and the Green Knight," we can see that everyone was scared of the skin colour of the Knight. So much that they though he might have been a ghost.
So, when the green Knight spoke, nobody could answer him, not even the noble Knights, who were petrified.
