The correct option is A The areas with very few plant and animal species (low species richness) with no threatened species are called biodiversity hotspots
Biodiversity hotspots are the regions with very high levels of species richness and high degree of endemism, that is, species confined to that region and not found anywhere else. Many of these are heavily threatened by habitat loss and other human activities.
There are 34 biodiversity hotspots in the world. Three of these hotspots are in India – Western Ghats, Indo-Burma and Himalaya.