Answer:
The answer is D. All of the above are plausible
Explanation:
A. Opportunity costs are relatively low is reasonable because as football game is taking place, most of the local people will go to the field to enjoy the field rather than spending their time at local shops/restaurants. Moreover, there are not many people from other towns visiting these facilities because of far distance.
B. is reasonable because it is high school football not professional football so the expenses spent on watching the game is low.
C. is is plausible because these towns are quite remote so watching their young neighbors/relatives playing may be one of the few entertainment choices available to them in weekend.
=> So, the answer is D.