In which situation would you apply Protocol 9?

Applying Protocol 9 is appropriate in situations involving a person who is unresponsive due to a life-threatening condition. This protocol is designed to address situations that require immediate and specific interventions to stabilize the patient and ensure their safety until emergency services arrive.

In the scenario where a person has been found unresponsive after hanging, the need for rapid assessment and activation of appropriate life-saving measures is crucial. The unresponsive state indicates a potentially critical condition that often requires immediate attention for airway management and CPR if necessary.

While the other scenarios present urgent medical issues, they do not specifically align with the criteria for Protocol 9. A student choking represents an airway obstruction situation, which calls for a different protocol focused on airway obstruction management. A child not breathing is a serious situation, but it typically falls under the respiratory distress or arrest protocols rather than unresponsiveness. Lastly, an allergic reaction, especially in a child, would require assessment of symptoms related to anaphylaxis and appropriate management for allergic emergencies. Each of these situations calls for distinct protocols tailored to their specific needs.