Final answer:
Excessive sweating is a common early sign of heat illness as the body attempts to cool down, not an exception. Other signs like dizziness, headache, and flushed face also indicate overheating, but they typically accompany sweating.
Step-by-step explanation:
The student asked which of the following is not an early sign of heat illness: a. dizziness, b. headache, c. flushed face, d. excessive sweating. Excessive sweating is actually a common early sign of heat illness rather than an exception, as the body tries to cool itself down by increasing perspiration. On the other hand, signs like dizziness, headache, and a flushed face are also indicators of overheating in the body, but they generally occur alongside sweating, not in its absence. Heat illnesses occur when the body is unable to properly cool itself, which can happen during conditions of extreme heat or exercise. Key signs often include changes like excessive sweating, cramps, and changes in mental