In general, young children's body temperature rises less as a result of sun exposure than adults'  However, it has been found that heat stroke is more likely to occur in young children if the temperature is high in a car compartment, and almost infrequently in adults  You won't get sunstroke even if you stay in a car for an hour at 45 degree
Which of the following, if true, best explains these findings
Heat stroke usually occurs when you lose your body weight in water. Young children have a larger body surface area to absorb heat more quickly, and because they have the same number of sweat glands as adults, they lose water more quickly