Best Response

Given the other player's strategy, a best response is a strategy that yields the highest payoff.

Example

Anna and Ben can either help or leave a village infested by zombies.

Ben decides to Leave. Anna's best response is to Leave as well because a payoff of 3 is better than a payoff of 0.

Ben


Anna
Help Leave
Help 2, 1 0, 0
Leave 0, 0 3, 2

What is Ben's best response if Anna decides to Help?

A payoff of 1 is better than a payoff of 0. Therefore, Help is the best response.

Ben


Anna
Help Leave
Help 2, 1 0, 0
Leave 0, 0 3, 2

Question

The payoff matrix is

Ben


Anna
Help Leave
Help 99, 49 -28, 78
Leave -21, 88 45, 18

What is Anna's best response if Ben chooses to Leave?

Anna's best response is Leave.