The world's first environmental conference, known as the United Nations Conference on the Human Environment, was held in Stockholm in 1972. The conference addressed global environmental issues and laid the foundation for future environmental policy discussions. It was a landmark event that marked the beginning of international cooperation on environmental matters.
Step 1: Analyze the options.
(A) Brazil: Although Brazil has hosted many environmental discussions, it was not the location of the first global environmental conference.
(B) Stockholm: This is the correct answer. The first international environmental conference was held in Stockholm in 1972.
(C) New York: New York is home to the United Nations headquarters, but the first environmental conference was not held there.
(D) London: London is a major center for international politics, but it was not the location of the first environmental conference.
Step 2: Conclusion.
The correct answer is (B), as Stockholm hosted the first global environmental conference in 1972.
Final Answer:
\[
\boxed{(B) \, \text{Stockholm}}
\]