Red data book is maintained by
Or
List of endangered species was released by
Or
The organization which publishes the Red List of species is

Options

A. IUCNNR
B. The Bombay Natural History Society
C. WPSI
D. IUCN

Answer

A

Explanation

IUCNNR is International Union for Conservation of Nature and Natural Resources which is now called World Conservation Union in Switzerland maintains a red data book of endangered plants and animals.