Question

which of the following best explains why humans need constant supplies of fresh water?
a humans need a constant supply of water to provide them with essential vitamins.
b humans need a constant supply of water to maintain proper hygiene.
c constant supplies of freshwater are needed because body water is continually being lost.
d constant supplies of freshwater are not actually necessary for survival.
please select the best answer from the choices provided

Explanation:

To determine the best explanation for why humans need constant supplies of fresh water, we analyze each option:

• Option A: Water does not provide vitamins, so this is incorrect.
• Option B: While water is used for hygiene, the primary reason for constant fresh water supply is physiological (e.g., hydration, removing waste), not just hygiene.
• Option C: The human body loses water through processes like urination, sweating, and respiration. To maintain homeostasis (proper bodily functions), this lost water must be replaced, so a constant supply of fresh water is needed because body water is continually being lost. This is correct.
• Option D: Fresh water is essential for survival, so this is incorrect.

Answer:

C. Constant supplies of freshwater are needed because body water is continually being lost