In which emergency situation should a fitness professional call 911 immediately?

The situation involving an unconscious person requires immediate action, as it can indicate a serious medical emergency such as a stroke, heart attack, or head injury. When someone is unconscious, their airway may be compromised, and they may not be breathing properly, which poses a significant risk of further injury or death. Calling 911 ensures that professional medical help is dispatched promptly, allowing for critical interventions that can be life-saving.

In contrast, while sprained ankles, cramps, and dizziness can be concerning, they generally do not necessitate immediate emergency response like unconsciousness does. These situations might require medical attention, but they typically allow for more time before help is needed.