Question

which is a sentence fragment? two of an octopuss eight limbs act more as legs than as arms. marcy wept during the movie it had an emotional ending. has developed resistance to the drug prescribed by the doctor.

Explanation:

A sentence fragment lacks a subject, verb, or a complete thought. The first option is a complete sentence. The second has a run - on issue but is not a fragment. The third option "Has developed resistance to the drug prescribed by the doctor." lacks a subject, making it a fragment.

Answer:

Has developed resistance to the drug prescribed by the doctor.