Concept:Red Data Book is an official document that records species at risk of extinction.
Explanation:It lists endangered plants and animals worldwide.
International organizations maintain this book to track conservation status.
India also has its own Red Data Book for local species.
This book helps identify species that need protection.
It provides guidelines to prevent extinction.
Examples include Himalayan Brown Bear, Pygmy Hog, and Andaman White-toothed Shrew.
Thus, the Red Data Book records only endangered plants and animals, not all species.
Answer:D. endangered plants and animals