Detailed explanation and options for the selected question.
What is the significance of "Agenda 21"?
A.
A global agreement to phase out nuclear energy
B.
A framework for sustainable development
C.
An initiative to conserve forests
D.
A treaty on marine biodiversity
Explanation:
Agenda 21 is a comprehensive framework for sustainable development adopted at the Rio Earth Summit in 1992. It is not specific to nuclear energy, forests, or marine biodiversity.