What happens to a player who receives a red card during a match?

A player who receives a red card during a match is sent off the field and cannot be replaced, which means that the team must continue the game with one fewer player. This is a significant disciplinary action intended to maintain the spirit of the game and ensure safety. Receiving a red card typically indicates a severe foul or an infringement that goes against the laws of the game, showing that such actions are not tolerated.

The other choices do not accurately reflect the consequences of receiving a red card. For instance, warning a player is more appropriate for minor offenses that do not warrant such a serious penalty. Substitution is not applicable in the case of a red card because the team cannot replace the player who was sent off. The suggestion that a player must sit out for 10 minutes aligns more closely with a temporary dismissal, like a yellow card, rather than the permanent dismissal that occurs with a red card. Thus, the action of sending off the player and not allowing a replacement is fundamental to the rules governing the conduct of players during a match.