Why are children at a higher risk for heatstroke compared to adults?

Children are at a higher risk for heatstroke compared to adults primarily because of their smaller body size and higher surface area to volume ratio. This physiological trait means that children can lose heat more quickly, but they also gain heat more rapidly when exposed to high temperatures. Their bodies have to work harder to regulate internal temperature, making them more susceptible to overheating.

Additionally, children may not recognize the signs of heat distress or understand the need for hydration and cooling down, further increasing their risk. They also tend to be more active and might be outside playing in hot conditions, which amplifies their exposure to heat without appropriate measures to cool down.

In contrast, larger body size found in adults allows for a greater volume to dissipate heat, making them typically more efficient in regulating body temperature. Because of these physiological differences, smaller children are particularly vulnerable, which is why this option correctly highlights the specific reason for their increased risk for heatstroke.