India signed and ratified the 1997 Kyoto Protocol in

August 2002

The correct answer is Option 4 - August 2002

Kyoto Protocol was an international treaty that extended the 1992 United Nations Framework Convention on Climate Change that commits state parties to reduce greenhouse gas emissions. India signed and ratified the 1997 Kyoto Protocol in August 2002. India, China and other developing countries were exempt from the requirements of the Kyoto Protocol because their contribution to the emission of greenhouse gases during the industrialisation period (that is believed to be causing today’s global warming and climate change) was not significant.