It embodies efforts by each country to reduce national emissions and adapt to the impacts of climate change.
It is a term used under the United Nations Framework Convention on Climate Change (UNFCCC).
It is for reductions in greenhouse gas emissions that all countries that signed the UNFCCC were asked to publish in the lead-up to the 2015 United Nations Climate Change Conference held in Paris, France in December 2015.
This is the post-2020 climate action commitment by parties to increase the ability to adapt to the adverse impacts of climate change and foster climate resilience and low greenhouse gas emissions. Hence, Option 2 is correct.
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