Explanation
The correct answer is (C) 192.
A total of 192 countries participated in the Copenhagen Summit, also known as the 15th United Nations Climate Change Conference, held in 2010. The summit aimed to address global climate change and negotiate international agreements to reduce greenhouse gas emissions and mitigate the impacts of climate change. Representatives from various nations, including government officials, delegates, and non-governmental organizations, gathered in Copenhagen, Denmark, to discuss and work towards a global consensus on climate action.
