Perspiration rids the body of excess water. Perspiration eliminates bacteria from the skin. Perspiration opens skin pores to absorb more oxygen. Perspiration helps to maintain a stable body temperature.
Which statement best describes the primary role of perspiration in humans?

Options:
- Perspiration rids the body of excess water.
- Perspiration eliminates bacteria from the skin.
- Perspiration opens skin pores to absorb more oxygen.
- Perspiration helps to maintain a stable body temperature.

Perspiration helps to maintain a stable body temperature.