Which of the following is considered an intrinsic risk factor for hypohydration?

Body composition is recognized as an intrinsic risk factor for hypohydration because it relates to the individual's physiological characteristics and can influence hydration status. Individuals with higher levels of body fat may have a different water distribution and metabolic rate compared to those with higher muscle mass, which is more prone to dehydration due to its higher water content.

In contrast, external factors like environmental conditions can affect hydration, but they are not intrinsic to the individual. Similarly, hydration habits and exercise intensity are related to behavioral and situational factors rather than inherent characteristics of the person. Therefore, body composition stands as a fundamental internal factor that shapes how the body manages and retains water, making it a critical consideration in understanding the risks of hypohydration.