Vitamins are -

Options

A. Inorganic substances and can't be synthesized by animals.
B. Inorganic substances and can be synthesizes by animals
C. Organic substances which cannot mostly by synthesized by animals.
D. Organic substances which can mostly be synthesized by animals.

Answer

**Step-by-Step Solution:**

1. **Understanding Vitamins**: Vitamins are essential nutrients that the body needs to function properly. They play various roles in bodily functions, including metabolism, immunity, and digestion.

2. **Classification of Vitamins**: Vitamins are classified into two main categories: water-soluble (like Vitamin C and B vitamins) and fat-soluble (like Vitamins A, D, E, and K).

3. **Organic Nature of Vitamins**: Vitamins are organic compounds, meaning they contain carbon and are derived from living organisms.

4. **Synthesis of Vitamins**: Most vitamins cannot be synthesized by the body and must be obtained through the diet. For example, humans cannot produce Vitamin C and must consume fruits and vegetables to get it.

5. **Conclusion**: Based on the above points, the correct statement about vitamins is that they are organic substances that cannot be mostly synthesized by animals and must be obtained through diet.

6. **Final Answer**: The correct option is: "Organic substances which cannot mostly be synthesized by animals."

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