Correct Answer: Greenhouse gas emissions

Solution : The correct answer is (D) Greenhouse gas emissions

The Kyoto Protocol is an international treaty that was adopted in 1997 and came into force in 2005 . Its primary objective is to combat climate change by reducing greenhouse gas emissions that contribute to global warming. The protocol sets binding emission reduction targets for developed countries, known as Annex I parties, for a specific commitment period.

Under the Kyoto Protocol, participating countries commit to reducing their emissions of greenhouse gases, including carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6). The protocol includes various mechanisms and provisions to facilitate emission reductions, such as emissions trading, clean development mechanism, and joint implementation.

The Kyoto Protocol represents a significant international effort to address climate change and promote sustainable development. While it has been succeeded by the Paris Agreement, the Kyoto Protocol played a crucial role in raising awareness and establishing a framework for international cooperation in reducing greenhouse gas emissions.