Lungs are enclosed in

Options

A. Peritoneum
B. Perichondirum
C. Pericardium
D. Pleural membranes

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks what structure encloses the lungs. We need to identify the correct term from the given options.

2. **Analyzing the Options**:
- **Option 1: Peritoneum**: This term refers to the membrane surrounding the abdominal cavity. It does not relate to the lungs.
- **Option 2: Perichondrium**: This term refers to the membrane that surrounds cartilage. It is not related to the lungs either.
- **Option 3: Pericardium**: This term refers to the membrane surrounding the heart. While it is a protective covering, it is not associated with the lungs.
- **Option 4: Pleural Membrane**: This term refers to the double-layered membrane surrounding the lungs, known as the pleura. It is specifically designed to protect and facilitate the function of the lungs.

3. **Identifying the Correct Answer**: After analyzing all the options, it is clear that the lungs are enclosed in the pleural membrane.

4. **Conclusion**: The correct answer to the question "Lungs are enclosed in" is **Option 4: Pleural Membrane**.