"i gazed--and little thought. what wealth the show to me had brought:

in this line from " i wandered lonely as a cloud", the poetic devices the poet uses are

a. simile, personification, and metaphor
b. metaphor, alliteration, and repetition
c. repetition, alliteration, and onomatopoeia
d. onomatopoeia, personification, and simile

B. metaphor, alliteration, and repetition

Explanation:

In this passage, these are the devices employed by the author. The author uses metaphor when he compares his experience in nature to a "show." He also employs alliteration when he uses the words "thought" and "brought." Finally, the author uses repetition by using the word "gazed" twice. All of these contribute to creating a more vivid image on the reader.