Asthma may be attributed to

Options

A. Inflammation of the trachea
B. Accumulation of fluid in the lungs
C. Bacterial infection of the lung
D. Allergic reaction of the mast cells in the lungs

Explanation

### Step-by-Step Solution:

1. **Understanding Asthma**: Asthma is a chronic respiratory condition characterized by inflammation and narrowing of the airways, leading to difficulty in breathing.

2. **Identifying Causes**: The question asks what asthma may be attributed to. We need to evaluate the options provided:
- Inflammation of the trachea
- Accumulation of fluid in the lungs
- Bacterial infection of the lung
- Allergic reaction of the mast cells in the lungs

3. **Analyzing Each Option**:
- **Inflammation of the Trachea**: This condition is more related to bronchitis or tracheobronchitis, which is different from asthma.
- **Accumulation of Fluid in the Lungs**: This is typically associated with pneumonia and is not a direct cause of asthma.
- **Bacterial Infection of the Lung**: This refers to conditions like tuberculosis, which is not related to asthma.
- **Allergic Reaction of the Mast Cells in the Lungs**: This is the correct option. Asthma is often triggered by allergens that lead to an immune response involving mast cells, which release histamine and cause symptoms like wheezing and breathlessness.

4. **Conclusion**: Based on the analysis, asthma may be attributed to an allergic reaction of the mast cells in the lungs.

### Final Answer:
Asthma may be attributed to an allergic reaction of the mast cells in the lungs.

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