What must happen if the corner kick area is unsafe or muddy?

In the context of the game, if the corner kick area is deemed unsafe or muddy, the most appropriate course of action is to allow the referee to reposition the corner kick to a safer area. This ensures that the players can execute the corner kick effectively and safely, minimizing the risk of injury.

Moving the kick to a safer spot respects the integrity of the game while also prioritizing player safety, as conditions can significantly impact their ability to perform. The other choices do not address the necessity of safety as comprehensively, nor do they uphold the rules regarding corner kick execution in a manner that protects players.