Which of the following is NOT a symptom of heat exhaustion?

High fever is not a symptom of heat exhaustion, making it the correct choice in this context. Heat exhaustion typically manifests with symptoms such as fatigue, nausea, and dizziness, which arise due to prolonged exposure to high temperatures, excessive sweating, and dehydration. These symptoms indicate the body’s response to stress from heat and a potential decline in hydration.

In contrast, high fever is generally associated with infections or illnesses rather than heat-related illnesses. While heat exhaustion can lead to a rise in body temperature, it does not typically cause a fever, especially not one as high as what would be characterized in other medical conditions. Understanding these distinctions is crucial for recognizing the signs of heat exhaustion and responding appropriately in a search and rescue scenario.