The Earth Summit, officially known as the United Nations Conference on Environment and Development (UNCED), was held in Rio de Janeiro, Brazil, in 1992. This landmark conference brought together world leaders, environmentalists, and other stakeholders to discuss and promote sustainable development.
Step 1: Review the Earth Summit
The Earth Summit focused on issues like climate change, biodiversity conservation, and the role of sustainable development in future global policies. It led to significant agreements, including the Rio Declaration and the Convention on Biological Diversity.
Step 2: Analyze Option A - 1985
The Earth Summit was not held in 1985.
Thus, option A is incorrect.
Step 3: Analyze Option B - 1992
The Earth Summit was indeed held in 1992 in Rio de Janeiro, Brazil. This was a key event in global environmental history.
Thus, option B is correct.
Step 4: Analyze Option C - 2000
The Earth Summit was not held in 2000. However, the World Summit on Sustainable Development (WSSD) took place in Johannesburg in 2002.
Thus, option C is incorrect.
Step 5: Analyze Option D - 2012
The Rio+20 conference, celebrating the 20th anniversary of the Earth Summit, was held in 2012. However, this is not the year the original Earth Summit took place.
Thus, option D is incorrect.
Step 6: Conclusion
The correct year of the Earth Summit (Rio Conference) is 1992. Therefore, the correct answer is option B.