Correct answer: (c) 3 only
Explanation
- A
1 and 2 only
1 and 2 only. Annex-I countries are a UNFCCC/Kyoto classification, not Cartagena (biosafety). CERs are Kyoto CDM credits, not Nagoya (ABS) instruments. Both 1 and 2 are mismatched.
- B
2 and 3 only
2 and 3 only. Clean Development Mechanism is Kyoto, so 3 is right, but CERs are not Nagoya. This pairing is not the key.
- C
3 only
3 only. Clean Development Mechanism is a Kyoto Protocol flexibility mechanism. Annex-I is UNFCCC, not Cartagena; Certified Emission Reductions are CDM units under Kyoto, not Nagoya. That stored letter is the official key.
- D
1, 2 and 3
All three. Pairs 1 and 2 are wrong, so all three cannot be the key.
Summary. Official key is (c) 3 only. CDM belongs to Kyoto. Annex-I is climate-convention language; CERs are Kyoto carbon credits, not Nagoya ABS papers. Honour the stored letter (c).
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