Which of the following is NOT a reason a referee shows a yellow card?

A referee shows a yellow card as a caution for various types of misconduct on the field, which helps maintain the spirit of the game and ensure fair play. Each of the first three options is indeed a valid reason for a yellow card. Unsporting behavior can include actions such as tripping an opponent or making a reckless challenge. Delaying the restart of play refers to actions that intentionally stall the game, which is against the rules and warrants a caution.

However, awarding a penalty kick is not an infraction committed by a player but rather a decision made by the referee in response to a foul committed inside the penalty area. It does not involve misconduct by a player that would require the referee to issue a yellow card. Therefore, it is correct to say that awarding a penalty kick is not a reason for showing a yellow card, as it is a part of the game’s officiating rather than a player’s action needing disciplinary action.