Riboflavin is

Options

A. Vitamin `B_(12)`
B. Vitamin `B_(6)`
C. Vitamin `B_(2)`
D. Vitamin `B_(9)`

Answer

### Step-by-Step Solution:

1. **Understanding Riboflavin**:
- Riboflavin is a type of vitamin. It is essential for human health and is known for its role in various bodily functions.

2. **Identifying the Correct Vitamin**:
- Riboflavin is also known as Vitamin B2. This is a key point to remember as it helps in identifying the correct answer from the options provided.

3. **Reviewing the Options**:
- The options given are:
- Vitamin B12
- Vitamin B6
- Vitamin B2
- Vitamin B9
- We need to determine which of these corresponds to riboflavin.

4. **Analyzing Each Option**:
- **Vitamin B12**: Known as cobalamin, this is not riboflavin.
- **Vitamin B6**: Known as pyridoxine, this is also not riboflavin.
- **Vitamin B2**: This is riboflavin, making this option correct.
- **Vitamin B9**: Known as folate or folic acid, this is not riboflavin.

5. **Conclusion**:
- The correct answer is Vitamin B2, which is riboflavin.

### Final Answer:
Riboflavin is Vitamin B2.

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