It should be c. Because I had this question before.
The best answer out of the four is C. the details always stay the same. Choice A. is incorrect because oral stories shouldn't be "fine-tuned" since the story should remain the stay, passed down through the generations. Choice B. is incorrect because oral stories have been created from past events. Choice D. is incorrect because not all oral stories are about love; they can be about courage, morality, etc.
