Nervousness anaemia is caused by the deficiency of vitamin

Options

A. `B_(1)`
B. `B_(2)`
C. `B_(6)`
D. `B_(12)`

Answer

To solve the question regarding which vitamin deficiency causes nervousness anemia, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks which vitamin deficiency leads to nervousness anemia.

2. **Identify Relevant Vitamins**: We need to consider the B vitamins, as they are commonly associated with various types of anemia and neurological issues.

3. **Analyze Each Vitamin**:
- **Vitamin B1 (Thiamine)**: Deficiency leads to beriberi, which is characterized by paralysis of the legs. This does not relate to nervousness anemia.
- **Vitamin B2 (Riboflavin)**: Deficiency causes inflammation of the tongue, which is not related to nervousness anemia.
- **Vitamin B6 (Pyridoxine)**: Deficiency leads to pellagra, which is associated with skin issues and not specifically nervousness anemia.
- **Vitamin B12 (Cobalamin)**: Deficiency of this vitamin is known to cause nervousness anemia, which affects the nervous system and can lead to various neurological symptoms.

4. **Conclude the Answer**: Based on the analysis, the vitamin that causes nervousness anemia due to its deficiency is **Vitamin B12**.

### Final Answer:
Nervousness anemia is caused by the deficiency of **Vitamin B12**.

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