In a game where each player can either cooperate or defect, which of the following best describes a dominant strategy?

A dominant strategy is an option that is always the best choice for a player, no matter what the other players decide to do. In a game where players can either cooperate or defect, if one player finds that defecting gives them a better outcome regardless of whether the other player cooperates or defects, then defecting is their dominant strategy. For example, if Player A knows that if Player B cooperates, they will get a high score by defecting, and if Player B defects, they will still score higher by defecting, then Player A will always choose to defect. This means that defecting is the best strategy for Player A in all situations. In this way, a dominant strategy simplifies decision-making because it removes the need to consider what the other player might do.