Obama's Environmental Policy on Climate Change

Throughout the late 20th and early 21st centuries, environmental concerns have increasingly influenced public policy and international relations in the United States. In particular, the rise of climate change as a critical global issue has led to various responses from different administrations. One pivotal moment in this ongoing crisis involved a significant piece of legislation aimed at addressing the environmental challenges posed by climate change. Which of the following environmental policies was enacted during the Obama administration that significantly aimed to reduce greenhouse gas emissions and increase energy efficiency?