What is the purpose of allowing player substitutions during a match?

The purpose of allowing player substitutions during a match primarily centers around the replacement of injured or fatigued players. This is crucial for maintaining player safety and ensuring that all participants can perform at their best throughout the duration of the match. When a player is injured, the ability to substitute allows the team to replace that player with another who is fit to continue the game, thus preserving the competitive integrity of the match.

Additionally, substitutions can also be made for players who are fatigued, as playing for an extended period can lead to decreased performance, which could increase the risk of injury. Substituting a tired player helps maintain a high level of performance and reduces the likelihood of injury due to fatigue.

The other options, while they may contain elements of truth regarding the overall strategy and enjoyment of the game, do not accurately represent the primary justification for substituting players. Player substitutions primarily enhance safety and maintain competitiveness rather than being directly tied to strategic enforcement, game timing adjustments, or entertaining the audience.