A sulpha drug used for the treatment of pneumonia is .

Options

A. sulpha acetamide
B. Sulphaguanidine
C. Sulphanilamide
D. Sulphapyridine

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a sulfa drug that is used to treat pneumonia. Sulfa drugs are a group of synthetic antimicrobial agents that contain the sulfonamide group.

2. **Identifying Pneumonia**: Pneumonia is an infection that inflames the air sacs in one or both lungs, which can fill with fluid or pus, causing cough, fever, chills, and difficulty breathing.

3. **Reviewing the Options**: The options provided are:
- Sulphur acetamide
- Sulphur guanidine
- Sulphur anilamide
- Sulphur pyridine

4. **Analyzing the Options**:
- **Sulphur acetamide**: Primarily used for eye infections.
- **Sulphur guanidine**: Not commonly associated with pneumonia treatment.
- **Sulphur anilamide**: An early sulfa drug, but not the most effective for pneumonia.
- **Sulphur pyridine**: Known for its effectiveness in treating pneumonia.

5. **Conclusion**: Based on the analysis, the sulfa drug that is used for the treatment of pneumonia is **Sulphur pyridine**.

6. **Final Answer**: The correct answer is **Sulphur pyridine** (Option D).