what is one way in which edgar allan poe creates a unity of effect of madness in the raven

Awith other birds that fly into the room at once.
Bwith the flickering lights outside the building
Cwith the bird's comical entrance into the chamber
Dwith the speaker's conversations with the raven

Verified Answer :

D. with the speaker's conversations with the raven

Answer:

D. with the speaker's conversations with the raven

Explanation:

When you read “The Raven” from Edgar Allan Poe you get the feeling of unrest and uncertainty, with the constant pounding and no explanation of what is making the sound. After the narrator finds out that is a raven he engages in a conversation with the creature, this could only drive the scene to something unreal and presumably mad, this way Poe creates a unity of effect of madness.