What is the usual way to organize a summary? State the main idea, give key details, include key words from the passage.
Begin with an introductory sentence, add a supporting detail, tell the main idea.
Draw a conclusion about the text, state that, give some key words.
Copy the first and last sentences from the passage, adding text to explain it.

The correct answer is letter C: It supports the myth by providing facts about how the Kiowas first named themselves with words that mean “coming out.” The historical manner in which the author explained the origins of the Kiowa gives a foundation as to the mythical descriptions that have been passed on from generations to generations. People are now more aware of the context and background of these native ancestors of the past.