Explanation
The correct answer is:
(A) Red Data Book.
The list of endangered species issued by the International Union for Conservation of Nature (IUCN) is called the Red Data Book. The Red Data Book is a comprehensive inventory of species at risk of extinction on a global scale. It provides valuable information on the conservation status, distribution, and threats facing various species. The IUCN Red List, which is part of the Red Data Book, categorizes species into different levels of threat, ranging from least concern to critically endangered.
