Official Answer Key & Detailed Solution
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Correct Answer: Option (D) — Swine flu
Concept & Option Breakdown
Standard Reference VerifiedH1N1 is a subtype of the Influenza A virus, commonly referred to as Swine Flu because of its origin and genetic reassortment among swine, avian, and human influenza strains. Bird flu is primarily caused by subtypes like H5N1 or H7N9; AIDS is caused by the retrovirus HIV; and Dengue is caused by the Flavivirus DENV transmitted by Aedes mosquitoes.
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