Official Answer Key & Detailed Solution
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Correct Answer: Option (A) — Argentina, Mexico, South Africa and Turkey
Concept & Option Breakdown
Standard Reference VerifiedArgentina, Mexico, South Africa, and Turkey are all full members of the G20.
Other options contain non-members: Malaysia and New Zealand in (b), Iran and Vietnam in (c), and Singapore in (d).
Singapore, New Zealand, Malaysia, and Vietnam are notable non-G20 members; eliminating options containing them immediately yields (a).
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