Official Answer Key & Detailed Solution
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Correct Answer: Option (C) — Inter-State quarantine is a Union subject under the Union List.
Concept & Option Breakdown
Standard Reference VerifiedOption (c) is correct: Inter-State quarantine is listed under Entry 81 of the Union List in the Seventh Schedule of the Constitution of India.
Option (a) is incorrect: Inter-State trade and commerce is under Entry 42 of the Union List.
Option (b) is incorrect: Inter-State migration is under Entry 81 of the Union List.
Option (d) is incorrect: Corporation tax is under Entry 85 of the Union List.
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