Which major international agreement was referenced in discussions about climate change in 2025?

The Paris Agreement is the correct answer because it serves as a pivotal framework for international climate change action, adopted in 2015 during the United Nations Climate Change Conference (COP21) in Paris. It establishes long-term goals to limit global warming to well below 2 degrees Celsius above pre-industrial levels, with aspirations to limit the temperature increase even further to 1.5 degrees Celsius.

In 2025, discussions about climate change often reference the Paris Agreement due to its wide adoption by nearly all countries and the commitment to enhance contributions to combat climate change through Nationally Determined Contributions (NDCs). These commitments are crucial as they reflect ongoing efforts and assessments among nations regarding their strategies to mitigate climate impact, adapt to changes, and promote sustainability globally.

While the other agreements listed, such as the Montreal Protocol, the Kyoto Protocol, and the Rio Declaration, have all played significant roles in addressing environmental and climate issues, they do not have the same current relevance or active status in international climate discussions as the Paris Agreement. The Montreal Protocol primarily focuses on ozone-depleting substances, the Kyoto Protocol was an earlier agreement with binding targets that has largely been superseded by the Paris Agreement, and the Rio Declaration, while foundational, addresses broader sustainable