The International Union for Conservation of Nature (IUCN) maintains a comprehensive inventory of the global conservation status of biological species. What is the standard name of the document published by this organization to keep a record of threatened species?

Step-by-step solution

The International Union for Conservation of Nature (IUCN) publishes the Red Data Book (or Red List), which contains a record of species that are facing the threat of extinction. The Green Data Book and Black Data Book are not the standard international documents for this purpose, and WWF is a separate conservation organization. Thus, the correct document is the Red Data Book. Answer: Red Data Book