The correct option is
B Endangered species
An endangered species is an animal variety which has been ordered as prone to end up wiped out. Jeopardized, as sorted by the International Union for Conservation of Nature Red List, is the second most extreme protection status for wild populaces in the IUCN's pattern after Critically Endangered.
example: Asian elephant (Elephas maximus)
So, the correct option is 'Endangered species'.