D.
Honestly this does seem confusing
It is an opinion because the statement is stating what the person thinks will happen, not what will indeed happen.
Answer: beauty as a lover
Explanation:
The extended metaphor in the poem “My November Guest is "beauty as a lover".
We can deduce that the narrator is explaining about how the November Guest My Sorrow was likened to be as beautiful as a lover.
We can see this when the narrative said "when she's here with me, the days are beautiful, she loves the bare, the withered tree and so on.