Question

agenda 21 was an agreement by
select one:
○ a. 178 nations for comprehensive sustainable development in 1992.
○ b. 300 nations to limit trade in endangered species in 1985.
○ c. 90 nations to enhance global biodiversity in 2000.
○ d. seven nations to halt cfc production in 1987.

Explanation:

Agenda 21 was a comprehensive plan of action adopted by 178 nations at the United Nations Conference on Environment and Development (Earth Summit) in 1992, focusing on sustainable development. Option b refers to CITES (not Agenda 21), option c is about a different biodiversity initiative, and option d is the Montreal Protocol (not Agenda 21). So the correct option is a.

Answer:

a. 178 nations for comprehensive sustainable development in 1992.