Hopkins's use of "seared," "bleared," and "smeared" is an example of

a. metaphor.

b. alliteration.

c. assonance.

d. simile.

Hopkin's use of "seared," "bleared," and "smeared" is an example of C) assonance.

It's not a metaphor or simile because you aren't comparing anything.

Alliteration means repetition of the same consonant in the beginning of the word, and since there are no same consonants, this isn't correct.