The line "I wandered lonely as a cloud" is an example of A. a simile. A simile is a figure of speech in which you compare two or more things using words such as like or as. So, here, the poet is comparing how he wandered similarly to a cloud. Alliteration is the repetition of the same consonant, metaphor compares things without using words such as like or as, and a couplet is a stanza consisting of two lines.