Question

which is the most serious heat related illness? excessive sweating heat exhaustion muscle cramps heat stroke

Explanation:

Heat - related illnesses vary in severity. Excessive sweating is a symptom, not a severe illness. Heat exhaustion is serious but less so than heat stroke. Muscle cramps are mild. Heat stroke is a life - threatening condition as it involves a failure of the body's temperature - regulating system, leading to very high body temperature, and can cause organ damage or even death.

Answer:

D. heat stroke