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Correct Answer: Option (D) — A-2; B-1; C-4; D-3
Concept & Option Breakdown
Standard Reference VerifiedImportant international days:
- World Environment Day — June 5 (2)
- World Forestry Day — March 20 / 21 (1)
- World Habitat Day — First Monday of October (traditionally October 3 in this context) (4)
- World Ozone Day — September 16 (commemorating the Montreal Protocol) (3) Thus, the correct match is A-2; B-1; C-4; D-3.
World Environment Day is universally celebrated on June 5 (A-2) and World Ozone Day on September 16 (D-3), which directly gives (d).
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