What percentage of body weight is composed of water?

The correct percentage of body weight composed of water is indeed between 50-70%. This range is significant as water is vital for numerous physiological functions, including regulating body temperature, transporting nutrients, and serving as a medium for biochemical reactions.

In adults, the percentage of body weight that is water typically hovers around 60%, with variations based on factors such as age, sex, and body composition. For instance, males generally have a higher water percentage due to having more muscle mass, which contains a higher water content compared to fat tissue.

The incorrect options provide ranges that do not accurately reflect typical human physiology. For example, 30-40% underestimates the essential role of water in the body, while 70-90% is too high and does not account for the body's composition accurately. 40-60% is closer but still falls outside the scientifically accepted range for most individuals. Understanding these statistics about body composition can inform practices in health, nutrition, and disciplines related to personal care and waxing services.