Answer: B) The little boy had on torn pants, dirty socks, and muddy shoes.
Step-by-step explanation: parallelism is a literary device that consists in the repetition of the grammatical structure of a word or a group of words in a sentence or paragraph. In the given sentence, we can see that we have a list of three things that the boy had, to represent parallel structure, the three elements should have the same grammatical structure, in this case, an adjective followed by a noun (torn pants, dirty socks, and muddy shoes).