The Traditional Plot is the structure behind most of the stories and movies you know. It is helpful to know what it is for writing your own stories and identifying every point in a story.
Is this from a book? What book?
I would say D, since A and B would be highly irrelevant. C sounds like a possible answer, but could still be viewed as irrelevant since it doesn't actually contain info about MP3 players.
The answer to your question is C
