I disagree with the phrasing right the first question it asks. It says "Let's say the other player cheats, and doesn't put in a coin. What should you do?" and

I disagree with the phrasing right the first question it asks. It says "Let's say the other player cheats, and doesn't put in a coin. What should you do?" and the two buttons are "cheat" and "cooperate". But if the other player doesn't put a coin in then not putting in a coin is not "cheating". It is simply not playing the game with that person. Cheating would be where you say you will put in the coin (or have already put the coin in) but not doing so.