Q. Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorders causing wheezing due to:
1) inflammation of bronchi and bronchioles.
2) proliferation of fibrous tissues and damage of the alveolar walls
3) reduction in the secretion of surfactants by pneumocystes.
4) benign growth on mucous lining of nasal cavity.
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Answer:
the answer is the 1> inflammation of bronchi and bronchioles .
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