Explanation:

- CITES: Stands for the Convention on International Trade in Endangered Species of Wild Fauna and Flora. It ensures that international trade in specimens of wild animals and plants does not threaten their survival.

- Correct Answer

- BRICS: A group of major emerging economies: Brazil, Russia, India, China, and South Africa. It focuses on economic cooperation and development, not on wildlife trade.

- OPEC: The Organization of the Petroleum Exporting Countries. It coordinates petroleum policies among major oil-exporting nations. Not related to wildlife or plant trade.

- GATS: The General Agreement on Trade in Services. It's a treaty under the World Trade Organization to remove barriers to international trade in services, unrelated to wildlife conservation.