The correct answer is D. A prepositional phrase means that it starts with a preposition. And in these examples, D is the only one that starts with a preposition "on".
Answer:
How Do I Love Thee? (Sonnet 43) by Elizabeth Barrett Browning
B. Is probably the answer
example, Mary, a farmer child, walked up to me.
Yes this sentence is a fragment. It doesn't have a predicate and sentences need to have a subject and a verb (predicate) in order to be complete.
I personally am not 100% sure but my guess would be SAID as it is the only word showing an action.