The United Nations Framework Convention on Climate Change (UNFCCC) is an international treaty drawn at:

1. United Nations Conference on the Human Environment, Stockholm, 1972
2. UN Conference on Environment and Development, Rio de Janeiro, 1992
3. World Summit on Sustainable Development, Johannesburg, 2002
4. UN Climate Change Conference, Copenhagen, 2009

Explanation

Option (b) is correct

• The United Nations Framework Convention on Climate Change (UNFCCC) was drawn and opened for signature at the United Nations Conference on Environment and Development (UNCED), held in Rio de Janeiro, Brazil, from June 3 to 14, 1992.

Answer: (b) UN Conference on Environment and Development, Rio de Janeiro, 1992