Read the following passage and answer the question by choosing among the four alternatives given:
The Paris Agreement, signed in 2015, represents a landmark event in the realm of international relations and environmental policy. It was a global effort to address the pressing issue of climate change and mitigate its impacts. The agreement aimed to limit global warming to well below 2 degrees Celsius above pre-industrial levels and to pursue efforts to limit the temperature increase to 1.5 degrees Celsius. Under the Paris Agreement, countries committed to implementing measures to reduce greenhouse gas emissions, adapt to the impacts of climate change, and provide financial assistance to developing nations in their climate actions. The agreement emphasized the principle of common but differentiated responsibilities, recognizing that developed countries should take the lead in emission reductions and provide support to developing countries. The Paris Agreement garnered widespread international support, with 197 parties signing and 191 ratifying the agreement. It symbolizes a collective global effort to address the existential threat of climate change and marks a significant step forward in international cooperation for a sustainable future.
What does the Paris Agreement emphasize in its approach to climate change?