Answer:
“Not only underground are the brains of men/Eaten by maggots.”
Step-by-step explanation:
Alliteration is a stylistic resource that is defined by the similarity between the consonant sounds in the first syllable in many words of the same sentence. Thus, the sounds define the sentence as alliterate, not the repetition of the consonant. In this case, the repetition of "N" sounds with the different vocals combinations, define the answer as alliterate.