What percentage of a student's body composition is made up of water?

The correct choice indicates that 55 to 65 percent of a student's body composition consists of water. This range is widely recognized as accurate for the average human body, which is composed largely of water. This percentage can vary depending on factors such as age, sex, and body composition. Generally, younger individuals and those with a higher percentage of lean muscle mass tend to have a higher water composition. Understanding this concept is important, particularly in coaching and physical education, because hydration plays a critical role in physical performance, recovery, and overall health.

Other choices do not accurately reflect the typical water composition of the human body. For instance, the higher range like 75 to 80 percent is often cited for newborns but is not consistent across different age groups. The lower ranges such as 40 to 50 percent or even 60 to 70 percent can lead to misunderstandings about the essential role of water in body functions. Therefore, recognizing the accurate range helps coaches and educators emphasize the importance of hydration for student-athletes.