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.
The causal relationships among plot events in ancient Greek tragedy stem from the belief that nothing happens by chance.
Everything that happens is already predetermined, and there is nothing you can do to change it - they didn't believe in chance, but in destiny.
I think it means like hes walking off of the bad path or maybe he was being slightly rude when he said this statment
Yes, it is true that a person uses one speaking style as it reflect his uniqueness as an individual.