The skin maintains critical chemicals and nutrients in the organism while preventing toxic materials from entering the organism and protecting against the detrimental effects of sun-emitted UV radiation.
- It provides a barrier to protect against mechanical, thermal, physical, and toxic materials.
- Evitates moisture loss.
- Reduces dangerous UV radiation consequences.
- Acts as a sensory body (touch, detects temperature).
- Assist in adjusting the temperature.
- An immune system to identify infections and so on.
- Vitamin D manufacturing.
Therefore, the answer is "Option b"
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