The anwser would be A Command/ the government
The most ethical action the football player could take is to report the hazard. He would be tempted by his desire to succeed/win the playoff, as it is an important game. If I was the football player, I would report the hazard because if I didn’t, someone could get hurt or my team could be punished/forced to forfeit.
I just took both AP micro and macro. I don't think any answer would be more appropriate than suppliers and demanders.