What purpose does the repeated tapping sound at the door serve in edgar allan poe's "the raven"?

a. it builds suspense
b. it symbolizes the birds intelligence
c. it adds to the melodic sound of the poem
d. it lengthens the poem

The repeated tapping sound at the door in Edhar Allan Poe´s "The Raven" serves to build suspense and provoke curiosity to the reader.

As it was mentioned, The Raven was a narrative poem written by Eggar Allan Poe noted for its musicality, stylized language, and supernatural atmosphere. The poem deals with a talking raven's mysterious visit to a distraught lover, makin him fall into despair slowly.

bro we need more information. how are we supposed to answer this?

the narrator closes the lantern tightly so the old man is

not awakened by the bright light

explanation: