A large undisturbed area where wildlife is protected in its natural habitat is Biosphere reserve. These three areas are found in a biosphere reserve:-
A) Core zone includes the protected areas, and are represented by the biosphere reserves.
B) Buffer zone includes the area which surrounds the core area. The activities which are allowed, they help to protect it.
C) Manipulation zone is the outermost area of the biosphere reserve. Several human activities like settlements, cropping, recreation, and forestry are carried out in such areas without disturbing the environment.
So, the correct answer is 'Biosphere reserve'.