The darkness symbolizes the strange and unknown, building suspense by delaying the identity of the "late visitor."
Answer: Option A.
Step-by-step explanation:
Lenore was name given to Edgar Allan Poe's significant other who had simply passed on. The sonnet is about his sorrow for Lenore. Furthermore, when nobody sees up at out the anticipation makes him trust it's Lenore.
So by not uncovering the personality it's driving him to think the haziness symbolizes his miracle and trust in Lenore.