Which of the following best explains why humans need constant supplies of fresh water?

The body continually loses water through processes such as urination, sweating, and breathing. We need to replace that lost water to keep the body functioning, so the best answer is “Constant supplies of freshwater are needed because body water is continually being lost.” Fresh water is not needed to provide essential vitamins, and hygiene alone does not explain the body’s ongoing need for water.

AI-written and checked against the verified answer.