Step 1: Understanding the Concept:
Biosphere reserves are terrestrial, marine, or coastal ecosystems designated under UNESCO’s Man and the Biosphere (MAB) Programme to promote solutions reconciling biodiversity conservation with sustainable human use.
Step 2: Detailed Explanation:
Unlike national parks or wildlife sanctuaries, which may focus heavily on specific charismatic species, a biosphere reserve adopts a holistic, ecosystem-level conservation approach.
It protects the entire landscape, which includes:
- Wild animals (A): All native faunal diversity.
- Wild land (B): The physical habitats, soil profiles, and geographical features of the wilderness.
- Natural vegetation (C): The entire floral diversity, ranging from trees and shrubs to grasses and non-vascular plants.
Thus, all three options are conserved within a biosphere reserve.
Step 3: Final Answer:
All the three options (A), (B), and (C) are correct.