The Kyoto Protocol introduced several flexible mechanisms to help Annex I (developed) countries meet their emission reduction targets. Which of these is a prominent example?

Explanation

The Clean Development Mechanism (CDM) allows Annex I countries to earn emission reduction credits from emission-reduction projects in developing countries, which can then be used to meet their Kyoto targets. NDCs are a feature of the Paris Agreement, while GCF and GEF are financial mechanisms supporting climate action.