Official Answer Key & Detailed Solution
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Correct Answer: Option (D) — A-4; B-2; C-1; D-3
Concept & Option Breakdown
Standard Reference VerifiedCorrect headquarters pairings:
- A. International Atomic Energy Agency (IAEA) — Vienna, Austria (4)
- B. International Telecommunication Union (ITU) — Geneva, Switzerland (2)
- C. Council of the European Union — Brussels, Belgium (1)
- D. Organisation for Economic Co-operation and Development (OECD) — Paris, France (3) Hence, the correct matching is A-4; B-2; C-1; D-3.
IAEA in Vienna (A-4) and OECD in Paris (D-3) immediately identify (d) as the correct choice.
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