In game theory, a Nash equilibrium occurs when:

Correct answer: B. Each player's strategy is optimal given the others' strategies

  • A. Every firm earns the same profit
  • B. Each player's strategy is optimal given the others' strategies
  • C. The government fixes the market price
  • D. Total industry output reaches its maximum

Explanation

At a Nash equilibrium, no participant can improve its outcome by changing strategy alone while the other strategies remain unchanged. The condition does not require equal profits or maximum total output.

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