I think its D? I don't think its A because just because people attend concerts once in while, doesn't show effectively how much the classmates listen to, on average, each day. I don't think its B because some people might not know how long they listen to music each day, and plus, its not efficient to ask each person manually. I don't think its C because you might not see them listening to music at least sometimes, so it wouldn't be very accurate. So, by process of elimination, I think its D...
Hope this helps.
Answer:
Janie's marriage to Logan is a disappointment because he is a rich and conceited man. he is not a passionate man. he beats her and makes her work like a mule.
I believe the answer is the 3rd option