A World Summit with representation from all the countries will be held in Johannesburg in September 2002 on the subject of

1. The question asks about the subject of a World Summit scheduled to be held in Johannesburg in September 2002 with representation from all the countries. 2. The major global summit held in Johannesburg, South Africa, from August 26 to September 4, 2002, was the World Summit on Sustainable Development (WSSD), often referred to as Rio+10. 3. This summit aimed to review progress made since the 1992 Earth Summit in Rio de Janeiro and reinvigorate global commitment to sustainable development (Option D), addressing environmental, social, and economic challenges. 4. Other topics like AIDS control (A), global terrorism (B), and human rights (C) are important global issues but were not the central theme of the 2002 Johannesburg Summit.