Wildlife conservation is the practice of protecting wild plant and animal species and their habitat. Wildlife plays an important role in balancing the ecosystem. It provides stability to different natural processes of nature like rainfall(transpiration from plant),changing of temperature (heat evolution by animals), fertility of soil (making of manure by earthworm). The goal of wildlife conservation is to ensure that nature will be around for future generations to enjoy and also to recognize the importance of wildlife and wilderness for humans and other species alike. Many nations have government agencies and NGOs dedicated to wildlife conservation, which help to implement policies designed to protect wildlife. Numerous independent non-profit organizations also promote various wildlife conservation causes.
So the correct option is 'wildlife sanctuaries are meant for the protection of both flora and fauna'