Question:

Smoking and .................. add to the risk of catching an allergy.

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Identify pairs where one is behavior (smoking) and the other is an environmental trigger.
Updated On: Oct 31, 2025
  • pneumonia
  • diabetes
  • cancer
  • pollution
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The Correct Option is D

Solution and Explanation

Step 1: Health knowledge.
Air pollution plus smoking aggravate allergic conditions.

Step 2: Remove diseases.
Pneumonia/diabetes/cancer are illnesses, not co-risk environmental factors here.

Step 3: Conclusion.
Hence (D) pollution.

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