The answer is B because there is no verb present so it is a fragment.
So the question is asking how the person thats telling the story use the story to explain facts about the natural world or specific Cherokee traditions. its sort like using the creation of the story as an example
By checking the sites that may appear at the top of your Google Search. If they are at the top then quite likely it'd mean they are most current and also more popular as well as maybe even more accurate for the finding's you are looking for.
