How does a player signal to be substituted?

A player signals to be substituted by leaving the field at the nearest point of exit. This action is crucial because it helps maintain game flow and ensures that the substitution process is conducted smoothly. The player needs to exit the field where it is most convenient and least disruptive to the game, which aligns with the principles of sportsmanship and fair play.

Raising both hands above their head is not an official method for substitution signaling in soccer, nor is waving to the referee a recognized signal. While both actions might draw attention, they do not inform the officials or players that a formal substitution process is being initiated. Kicking the ball out of play is also not an appropriate way to signal for a substitution; it is actually a method employed when a team wishes to maintain possession and ensure a stoppage in play for reasons like injury or a foul. Therefore, the only option that accurately represents the procedure for signaling a substitution is the one that refers to exiting the field at the nearest point.