Q: The United Nations Framework Convention on Climate Change (UNFCCC) was first signed during
(a)the Stockholm Conference on the Human Environment, 1972
(b)the Montreal Protocol, 1987
(c)the Rio Earth Summit, 1992
(d)the Kyoto Protocol, 1997
Correct Answer: (b)
The correct answer is (b): the Montreal Protocol, 1987. Subject: Geography | Sub-topic: Atmosphere & Climatology Note: This answer was determined through AI-based research. Verify against the official answer key when available.