UPSC CSE Prelims

Correct Option: A (The International Union for Conservation of Nature) Explanation: The Invasive Species Specialist Group (ISSG), steward of the Global Invasive Species Database, is a specialist group of the IUCN Species Survival Commission. Option-wise Analysis: A. Correct-ISSG sits within IUCN’s Species Survival Commission. B. Incorrect-UNEP works on invasive alien species but does not own this specialist group. C. Incorrect-The historic World Commission on Environment and Development is not the ISSG parent body. D. Incorrect-WWF is a separate conservation organization, not the institutional home of ISSG.