Which of the following is a major symptom of heatstroke?

The major symptom of heatstroke is dry skin. In cases of heat exhaustion, a person may experience excessive sweating as the body tries to cool itself; however, during heatstroke, the body's temperature regulation fails, and the skin can become hot and dry due to the inability to sweat. This lack of sweating and dry skin is an indication that the body is no longer able to manage its temperature effectively, leading to dangerously high body temperatures.

Other symptoms of heatstroke can include confusion, altered mental state, or loss of consciousness, which highlight the severe impact of this condition. Recognizing dry skin as a symptom is critical for immediate response, as it signals a life-threatening situation requiring urgent medical attention.