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".
The answer is either C or A
Answer: Brink, Andrew P, a dry white season, New York, Morrow, 1980, print
C. It was she whole took the pictures of the whales
Am not sure but the answer is think it is,is B