What does the IUCN stand for, and what is its purpose?

The IUCN, or International Union for Conservation of Nature, is indeed focused on addressing biodiversity issues, which makes the choice mentioning their role in tracking biodiversity the correct one. The IUCN seeks to ensure that the use of natural resources is equitable and ecologically sustainable. They create and maintain the Red List of Threatened Species, which assesses the extinction risk of species globally, highlighting the critical biodiversity issues that need attention and action.

While the organization does engage in a broad range of activities, including promoting wildlife conservation, managing protected areas, and conducting research on various environmental topics such as climate change, its primary mission revolves around the conservation of biodiversity and ensuring that ecosystems are healthy and sustainable. This emphasis aligns with the purpose of tracking biodiversity issues as a way to inform and guide conservation efforts globally.