Asthma may be attri-buted to

The correct option is C

Allergic reaction of the mast cells in the lungs

The correct answer is C.

The explanation for correct options:

1. Asthma is a condition where a person's airways become congested due to excess mucus.
2. A person with asthma experiences breathing problems and wheezing due to inflammation in the bronchioles and bronchi.
3. It is mainly an allergic response generated by the mast cells.
4. The localized mast cells (produce IgE antibodies) release histamine, etc.

The explanation for incorrect options:

Option A:

Accumulation of fluid in the lungs is a condition which is termed pulmonary edema.

Option B:

Inflammation of the trachea is known as Tracheitis.

Option D:

Bacterial infection of the lungs causes pneumonia.

The final answer: Asthma may be attributed to an Allergic reaction of the mast cells in the lungs.