In which respiratory disorder most of the space of alveolar sac is occupied by fluid with dead WBC's?

Options

A. Bronchitis
B. Asthma
C. Emphysema
D. Pneumonia

Answer

To solve the question regarding which respiratory disorder occupies most of the space of the alveolar sac with fluid and dead white blood cells, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a respiratory disorder characterized by the presence of fluid and dead white blood cells in the alveolar sacs.

2. **Identify the Options**: The options provided are:
- A) Bronchitis
- B) Asthma
- C) Emphysema
- D) Pneumonia

3. **Analyze Each Option**:
- **Bronchitis**: This condition involves inflammation of the bronchial tubes, leading to mucus production but does not primarily fill alveolar sacs with fluid and dead cells.
- **Asthma**: Asthma is characterized by airway constriction and inflammation but does not typically involve fluid accumulation in the alveoli.
- **Emphysema**: This is a condition that involves the destruction of alveoli, leading to air trapping, but does not involve fluid accumulation.
- **Pneumonia**: This is an infection that causes inflammation in the lungs, leading to the alveoli being filled with fluid, dead white blood cells, and other debris as the body responds to the infection.

4. **Conclusion**: Based on the analysis, pneumonia is the respiratory disorder that leads to the alveolar sacs being filled with fluid and dead white blood cells. Therefore, the correct answer is D) Pneumonia.

### Final Answer:
**D) Pneumonia**