I think its d. is your answer but don't hold me to it :)
<span>In the choices indicated above, the sentence which contains correct comma usage is this one:
D. Swimming in the cool water, Colton felt extremely relaxed.
This sentence is composed of dependent and independent clauses. Comma is used instead of using conjunctions.</span>
The question is asking to choose among the following choices the reason why is "The origin of the Robin" considered a creation myth, base on my research, the possible answer would be in letter C. It is about a boy who changes into a robin. I hope you are satisfied with my answer and feel free to ask for more