a. CITES Convention
b. The Earth Summit
c. G-16 Summit
d. MAB Programme
Answer: b. The Earth Summit
Explanation: The UNCED, also known as the Rio de Janeiro Earth Summit, Rio Summit, Rio Conference, and Earth Summit was the largest UN conference held in Rio de Janeiro from 3 to 14 June 1992. More than 100 heads of state meet in Rio de Janeiro, Brazil. The World Summit was created to answer Member States to work together globally on development issues after the Cold War.