What is the correct action of an official when they see a player from the defensive team break the plane of the boundary during an alternating possession?

When a defensive player breaks the plane of the boundary during an alternating possession situation, the appropriate action for the official is to stop play and issue a warning. This is crucial for maintaining the integrity of the game and ensuring that players understand the rules regarding possession and boundaries.

When the alternating possession arrow is assigned, both teams must respect the regulations that govern their positioning during the situation. Breaking the plane of the boundary can indicate a violation that may disrupt the flow of play and give an unfair advantage to one of the teams. Therefore, stopping play allows the official to address the infraction, communicate the rule to the offending player, and reset the situation correctly.

This action helps enforce proper conduct on the court and ensures that all players remain within the defined limitations of the game. Other choices, such as continuing play without intervention or issuing a warning without stopping play, would not effectively address the rule violation. Likewise, recording the incident for future reference is not proactive enough to correct the behavior at that moment and does not suffice in promoting fair play during the game.