Choose the sentence fragment A. Most of them show up everyday B. The house on the corner is empty C. Walked home from school yesterday D. Frankie and joe kept it for a long time

I'd go with B because there's enough information in this sentence. Also, the other options don't make sense to me at all.

The sentence fragment in the options provided is "walked home from school yestarday"

Explanation:

A sentence fragment occurs when it cannot stand on its own and does not have meaning by itself. In the examples provided, option C) is a sentence fragment since it is incomplete. If we ask who walked home from school we don't know.

The rest of the options are complete sentences since they meaning on its own (subject verb and predicate).