The correct options are
A Sanctuary is a natural habitat for animals and birds
B Zoo is an artificial habitat for animals and birds
Zoo and sanctuary are places where wild animals and birds are placed in a protective environment. Zoo is a place where animals and birds are in a captivity of artificially created habitat. On the other hand, in a sanctuary the natural habitat of wild animals and birds are created. A zoo might buy, sell, breed, or trade animals. A sanctuary does not breed, buy, sell or trade animals. Poaching is an illegal activity, both zoo and sanctuary do not allow the same.