What is a symptom of heat exhaustion?

The correct choice identifies excessive sweating as a symptom of heat exhaustion. This condition occurs when the body loses more fluids and salt than it takes in, often due to prolonged exposure to high temperatures or vigorous physical activity in hot environments. One of the body’s responses to overheating is to enhance perspiration to help cool down, which is why excessive sweating is a common and notable symptom. Recognizing excessive sweating can be crucial for identifying heat-related illnesses early, allowing for prompt treatment before more severe symptoms develop.

Although dilated pupils can be associated with various medical conditions, they are not specifically indicative of heat exhaustion.