What is the procedure for restarting the game after a stoppage due to an injury?

The procedure for restarting the game after a stoppage due to an injury is conducted with a drop ball at the location of the stoppage. This is the appropriate method because it reflects the principle of fairness in play. When play is halted for an injury, the game should resume in a manner that respects the positions of the players involved at the time of the stoppage.

A drop ball allows for both teams to partake in the restart without giving one side an undue advantage. It ensures that the game can resume smoothly by dropping the ball at the exact spot where the play was interrupted, thereby acknowledging the game's flow prior to the injury. It's also important to note that, depending on the specific circumstances of the injury and the referee's discretion, players from both teams may need to be at least 4 meters away from the ball during the restart to ensure fairness and safety.

The other options mentioned do not align with the correct procedures for restarts after an injury. For instance, a penalty kick is only awarded for a specific foul committed against a player within the penalty area, while corner kicks and goal kicks are specific restarts based on other game situations, not applicable in the context of an injury stoppage.