The answer to the question is A
The correct answer among the choices is option D. The word "swiftly", which is italicized in the example, is an adverb. An adverb modifies a verb, an adjective or other adverbs. In the sentence, the verb modified is swim which is a verb.
Answer:
The answer I think you are looking for would be D. character versus character.
Explanation:
This is because it is the only answer that makes the most sense.