Deficiency of vitamin D leads to disease

Options

A. Rickets
B. Beri-beri
C. Scurvy
D. Night-blindness

Answer

### Step-by-Step Solution:

1. **Identify the Vitamin in Question**: The question asks about the deficiency of vitamin D.

2. **Understand the Role of Vitamin D**: Vitamin D is essential for maintaining healthy bones and teeth, supporting the immune system, and regulating calcium and phosphorus in the body.

3. **Research Diseases Associated with Vitamin D Deficiency**: Common diseases associated with a lack of vitamin D include rickets in children and osteomalacia in adults.

4. **Select the Correct Disease**: Based on the knowledge of vitamin D deficiency, the disease that is primarily associated with this deficiency is rickets.

5. **Conclude the Answer**: Therefore, the deficiency of vitamin D leads to the disease known as rickets.

### Final Answer:
Deficiency of vitamin D leads to the disease rickets.

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