Which condition must be met for a replay to be called regarding court obstructions?

For a replay to be called regarding court obstructions, the condition that the obstruction must be within a specific proximity to the play is crucial. This is because obstructions can affect the players' ability to participate in the game effectively. When an obstruction occurs within 12 feet, it is deemed close enough to influence the play and therefore warrants a replay to ensure fairness. This guideline helps maintain the integrity of the game, as it recognizes that players should not have obstacles that significantly interfere with their movements or the flow of play.

The other conditions listed do not adequately address the core issue of proximity and its impact on play. For instance, obstructions caused by players may pertain to different contexts of the game, but they do not automatically justify a replay unless they meet the proximity requirement. Similarly, the agreement of all players or the timing of the obstruction occurring during a serve may not be relevant factors for calling a replay in the context of proximity-based obstructions. Therefore, the emphasis on the limitation of 12 feet is essential in determining whether a replay should be executed due to court obstructions.