What percentage of water is found in the average adult body?

The average adult body contains approximately 57-60% water, making this range the correct answer. This percentage reflects the essential role that water plays in various physiological processes, including temperature regulation, nutrient transportation, waste removal, and maintaining overall cellular function.

Water content can vary based on various factors, including age, sex, and body composition—muscle tissue contains more water than fat tissue. Generally, adult men tend to have a higher percentage of body water compared to women due to higher muscle mass. Understanding the average water composition helps emphasize the importance of hydration for maintaining health and wellness, as even slight dehydration can impact bodily functions.

While other ranges are plausible for specific populations or in certain contexts, they don't accurately represent the typical adult's water content, which is why focusing on the 57-60% range offers a clearer picture of human biology.