When was the historic Paris Agreement on climate change adopted by world leaders during the UN Climate Change Conference (COP21)?

Correct option is B

The correct answer is (B) 2015
Explanation:
• Paris Agreement was adopted in December 2015 at COP21.
• COP21 was held in Paris, France under UNFCCC framework.
• Agreement aims to limit global warming below 2°C.
• It promotes nationally determined contributions by countries.
Information Booster:
• Paris Agreement entered into force in November 2016.
• India submitted its first NDC in 2015.
• It supports climate finance and technology transfer.
Additional Knowledge (Incorrect Options):
(a) 2005
• Kyoto Protocol entered into force in 2005.
(c) 2012
• Doha Amendment to Kyoto Protocol was adopted in 2012.
(d) 1999
• No major global climate treaty adopted in 1999.