Which of the following is a symptom of heat stress?

When discussing symptoms of heat stress, it's important to recognize that the condition can manifest in various ways, all of which can be serious. Each of the symptoms listed in the options plays a significant role in identifying heat stress.

Fatigue, exhaustion, and muscle weakness indicate that the body is struggling to cope with excessive heat and is losing its ability to function efficiently. These symptoms suggest that the individual needs to rest and hydrate, as prolonged exposure can lead to more severe health consequences.

Dizziness and fainting are direct signs that the body's systems are overwhelmed. They indicate a lack of blood flow to the brain due to dehydration or heat-related illness, which can pose immediate risks, such as falling or losing consciousness.

Clammy skin may occur when the body is overheating; however, hot and dry skin suggests a more severe condition, such as heat stroke. This symptom shows that the body is unable to cool itself down effectively, which can be life-threatening.

Given that all these symptoms reflect different aspects of heat stress, confirming the presence of any of them is a warning to take immediate action to cool the body and seek medical help if necessary. Recognizing the combination of these symptoms is crucial for appropriate and timely intervention.