Vitamin which induced maturation of R.B.C. `:-`

Options

A. `B_(1)`
B. A
C. `B_(12)`
D. D

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which vitamin is responsible for inducing the maturation of red blood cells (RBCs).

2. **Reviewing the Options**: The options provided are:
- Vitamin B1
- Vitamin A
- Vitamin B12
- Vitamin D

3. **Analyzing Each Vitamin**:
- **Vitamin B1 (Thiamine)**: This vitamin is essential for the repair and growth of tissues but does not play a direct role in the maturation of RBCs.
- **Vitamin A (Retinol)**: This vitamin is primarily involved in vision and the growth of epithelial tissues, not in RBC maturation.
- **Vitamin B12 (Cobalamin)**: This vitamin is crucial for the maturation and development of RBCs in the bone marrow. It is known for its complex structure and is the largest among the vitamins listed.
- **Vitamin D (Calciferol)**: This vitamin is mainly involved in calcium absorption and bone health, and it does not influence RBC maturation.

4. **Identifying the Correct Answer**: After analyzing the functions of each vitamin, it is clear that Vitamin B12 is the only vitamin that directly induces the maturation of red blood cells.

5. **Conclusion**: Therefore, the correct answer to the question is **Vitamin B12**.