Answer: A) It changes them from nouns to adjectives
B and D cant be because "energenic", "athlete" and "poet" are nouns, not adjectives or adverbs. Finally, C is not the answer because the words <em>poetic, athletic, and energetic</em> are used to describe nouns, not verbs likes adverbs do.
If I am correct the answer should be "<span>It is grammatically correct, but the parallel structure can be called into question in the second half of the sentence" hope it helps good luck </span>