Air masses are formed when the air above huge homogeneous areas acquires the characteristics of the area. This leads to the air having little horizontal variations in form. Accordingly,
C is correct, as it is a cold, large and homogeneous mass of land.
A is incorrect, as the size of the forested areas are not large enough to create air-mass
B is incorrect, as Himalayas do not constitute a homogeneous platform.
D is incorrect due to regional variations across the Deccan Plateau.
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