Which of the following diseases is not correctly matched with the vitamins mentioned with it ?

Options

A. Vitamin `B_(2)`-Cracking of lips
B. Vitamin C-Bone deformities
C. Vitamin D-Osteomalacia
D. Vitamin A-Night blindness

Explanation

To determine which of the following diseases is not correctly matched with the vitamins mentioned, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understand the Role of Vitamins**:
- Vitamins are organic compounds that are essential for various biological functions in living organisms.

2. **Evaluate Each Option**:
- **Option 1**: Vitamin B2 (Riboflavin) is associated with skin cracks, lip issues, and hair loss due to its deficiency. This is a correct match.
- **Option 2**: Vitamin C is known to prevent iron deficiency and boost immunity. However, its deficiency leads to scurvy, not the disease mentioned in the option. Therefore, this match is incorrect.
- **Option 3**: Vitamin D is crucial for regulating calcium and phosphorus levels in the blood. Its deficiency leads to osteomalacia, which is a correct match.
- **Option 4**: Vitamin A is essential for eye health, particularly in preventing night blindness. This is also a correct match.

3. **Identify the Incorrect Match**:
- From the analysis, Option 2 is the only one that does not correctly match the vitamin with its associated disease.

### Conclusion:
The disease that is not correctly matched with the vitamin mentioned is in **Option 2**.