"Climate Action Tracker" which monitors the emission reduction pledges of different countries is a :

1. The question asks to identify the nature of the "Climate Action Tracker" (CAT). 2. The Climate Action Tracker is an independent scientific analysis that tracks government climate action and measures it against the goals of the Paris Agreement. 3. It is a collaboration between two research organisations: Climate Analytics and NewClimate Institute. 4. Option (A) describes it as a Database created by coalition of research organisations, which accurately reflects its nature as a product of these two collaborating institutions that monitors and presents data on emission reduction pledges and actions. 5. Option (B) is incorrect; CAT is independent of the IPCC. 6. Option (C) is incorrect; CAT is not a formal committee under the UNFCCC. 7. Option (D) is incorrect; while its work aligns with the goals of UNEP and the World Bank, it is not directly promoted and financed by them as its primary identity. 8. Therefore, option (A) provides the best description.