Why did Leon’s coach, trainer, and physician advise him against returning to any physical activity?

  1. His coach and medical staff were worried that Leon might have suffered a concussion.
  2. Leon’s coach and medical staff knew that in the heat of the moment, when adrenaline is high, he might not recognize the signs of a concussion.
  3. The coach and medical staff wanted Leon to cool down, prior to being assessed for a concussion.
  4. All of the above.