I say A or C if I’m wrong sorry
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.
Thats not allowed to happen. if it does then the sentence is incorrect, because of the subject\verb agreement