What percentage of water does the average human body contain?

The average human body is composed of approximately 60% water. This percentage can vary based on factors such as age, sex, and body composition. In general, adult males have a higher water percentage than adult females due to greater muscle mass, which contains more water. Infants, for instance, have an even higher proportion of water, around 75-78%.

The significance of water in the human body lies in its crucial roles, including regulating body temperature, transporting nutrients, and facilitating metabolic processes. Maintaining adequate hydration is essential for overall health and bodily function, as water supports nearly every biological process.

While the options provided include several percentages, the figure of 60% best reflects the average water content of a human body, making it the correct choice.