It would not be ethical to
a. steal the ball from another player during a game
b. use your skills to score a basket by dunking the basketball
c. fake an injury to get an extra timeout in a close game
d. get a hit each time you are up to bat in a baseball game

The answer is letter c. Fake an injury to get an extra timeout in a close game. This action may create a strategy to win and buy some time to plan a proper winning strategy, but it is not ethical, since you do not show proper sportsmanship and you do not accept the results of the game.

The Answer is C. The motivation of the brothers