Formation of RBC is because of

Options

A. Mucoprotein
B. Vitamin `B_(12)`
C. Vitamin C
D. both 1 & 2

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the formation of Red Blood Cells (RBCs) and what factors contribute to this process.

2. **Identifying the Process**: The formation of RBCs is known as erythropoiesis. This is a crucial physiological process that occurs in the body.

3. **Key Nutrients Involved**: One of the most important vitamins involved in the formation of RBCs is Vitamin B12. This vitamin plays a significant role in the synthesis of DNA and the maturation of red blood cells.

4. **Location of RBC Formation**: The process of erythropoiesis primarily occurs in the bone marrow, but it is regulated by hormones produced in the kidneys. The kidneys produce erythropoietin, a hormone that stimulates the production of RBCs in response to low oxygen levels in the blood.

5. **Conclusion**: Therefore, the formation of RBCs is primarily due to the influence of Vitamin B12, along with the hormone erythropoietin produced by the kidneys.

### Final Answer:
The formation of RBCs is primarily due to Vitamin B12.

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