Sociologists study folktales because they provide a means of understanding the distinctive values of a culture. However, the folktales in almost all cultures are adaptations of the same ancient narratives to the local milieu. Which one of the following, if true, most helps to resolve the apparent discrepancy in the information above? ['The ancient narratives persist largely because they speak to basic themes and features of the human condition.', 'Because no single person is the author of a folktale, folktales must reflect the values of a culture rather than those of an individual.', 'Folktales are often oral traditions that persist from times when few people left written materials.', 'The manner in which a culture adapts its narratives reveals information about the values of that culture.']