A physician is performing CPR on an athlete. What has MOST likely happened to cause this response?

CPR is performed when a person is unresponsive and not breathing normally, usually because the heart has stopped beating effectively. A severe concussion or cold, clammy skin may need urgent care, but neither alone is the reason to begin CPR. The best answer is “The athlete’s heart has stopped beating.”

AI-written and checked against the verified answer.