What is the term for a scenario where oligopolistic firms select their optimal strategies based on the strategies chosen by their competitors?

Explanation

The correct answer is Nash equilibrium, which describes a situation where each firm chooses the best possible strategy considering the choices of others. A dominant strategy is one that is best regardless of others' actions. A cartel is a group of firms colluding to control the market. Collusive agreements involve cooperation to limit competition. Game theory is the broader study of strategic interactions.