Night-blindness may be caused by the deficiency of vitamin

Options

A. A
B. B
C. C
D. D

Answer

### Step-by-Step Solution:

1. **Understanding Night Blindness**:
- Night blindness, also known as nyctalopia, is a condition where an individual has difficulty seeing in low light or darkness.

2. **Identifying Vitamin Deficiencies**:
- Different vitamins are associated with various health issues. For example:
- Vitamin A deficiency leads to night blindness.
- Vitamin B deficiency can cause Beriberi.
- Vitamin C deficiency leads to Scurvy.
- Vitamin D deficiency can result in Rickets.

3. **Focusing on Vitamin A**:
- Among the vitamins listed, Vitamin A is specifically linked to vision and is essential for the maintenance of healthy vision, especially in low-light conditions.

4. **Conclusion**:
- Therefore, the deficiency of Vitamin A is responsible for causing night blindness.

5. **Sources of Vitamin A**:
- To prevent or treat night blindness, it is important to include sources of Vitamin A in the diet. These include:
- Dairy products
- Cereals
- Milk
- Carrots
- Fish
- Broccoli

6. **Final Answer**:
- The vitamin responsible for night blindness is **Vitamin A**.