Final answer:
If a player exhibits signs of a concussion in football, they should be immediately removed from the game until cleared by the head coach.
Step-by-step explanation:
If a player exhibits signs, symptoms, or behaviors consistent with a concussion in football, they should be immediately removed from the game and not return until cleared by the head coach. It is essential to prioritize the player's safety and well-being above all else. Continuing to play or allowing the player to decide would risk exacerbating the injury and potentially cause long-term damage.