Fortunately, this question allows us to focus on the short last paragraph. Let's describe the interest of the folklorists. The author mentions viewing folklore in context and considering what it means to the people who use it. The author also discusses the different uses of folklore by men and women. Based on the last line of the passage, we are also interested in the role folklore plays in a particular culture.
Answer choice C appears to have all of these elements, which is why it is the correct answer.
As for answer choice D, it seems to leave out the context and people behind the tale or song. These are the things that the author finds so important. The folklorists in the last paragraph do not seem interested in how the text itself has changed over time.
