The answer is option 'A' True.

CITES, which stands for the Convention on International Trade in Endangered Species of Wild Fauna and Flora, is an international agreement between governments. Its primary objective is to ensure that international trade does not threaten the survival of wild animals and plants. CITES lists species that should not be traded or that should be traded under strict regulations to prevent their exploitation and endangerment.

Here is a detailed explanation of why the answer is true:

1. The Purpose of CITES:
- CITES was established in 1973 and currently has 183 member countries.
- Its primary goal is to regulate and monitor international trade in endangered species to protect them from overexploitation.
- The convention aims to ensure that the survival of wild plants and animals is not jeopardized by international trade.

2. Listing Species:
- CITES maintains three appendices that categorize species based on their level of protection needed.
- Appendix I includes species threatened with extinction, and their trade is generally prohibited.
- Appendix II includes species that are not necessarily threatened with extinction, but trade must be regulated to ensure their survival.
- Appendix III includes species that are protected in at least one country and may require cooperation between countries to control their trade.

3. Trade Regulations:
- CITES imposes strict regulations on the trade of listed species.
- Before any international trade of listed species can occur, the exporting country must issue a permit or certificate confirming that the trade is legal and sustainable.
- The import of listed species also requires the same documentation to ensure compliance with regulations.
- These permits help prevent illegal trade and ensure that species are not being overexploited.

4. Conservation Impact:
- CITES has had a significant impact on conservation efforts worldwide.
- By regulating international trade, it has helped protect numerous endangered species from extinction.
- It has also raised awareness about the importance of sustainable trade and the need to protect biodiversity.

In conclusion, CITES is an international agreement that lists species that should not be traded or should be traded under strict regulations. Its primary aim is to protect endangered species from overexploitation and ensure their survival. Therefore, the answer to the question is true (option 'A').