Question:

Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing.

Benign growth on mucous lining of nasal cavity

Inflammation of bronchi and bronchioles

Proliferation of fibrous tissues and damage of the alveolar walls

Reduction in the secretion of surfactants by pneumocytes

Solution:

Correct option is B. Inflammation of bronchi and bronchioles
Asthma is a difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles. It can be due to increasing air borne allergens and pollutants. Asthma is an allergic condition. Many people in urban areas are suffering from this respiratory disorder.So, the correct answer is 'inflammation of bronchi and bronchioles'