Final answer:
The sound device used in the excerpt is alliteration.
Step-by-step explanation:
In the excerpt from "Annabel Lee," by Edgar Allan Poe, the sound device used is alliteration. Alliteration is the repetition of consonant sounds at the beginning of words in a sentence or phrase. In this excerpt, the repetition of the /b/ sound in the words "bright," "beautiful," and "Annabel" creates a musical quality and emphasizes the speaker's admiration for Annabel Lee.
Learn more about Sound devices in poetry