What defines a subcontinent in geographical terms?

A subcontinent is defined as a large, distinct landmass that is part of a continent but also possesses geographical and cultural characteristics that differentiate it from the rest of the continent. In this context, the correct answer emphasizes that a subcontinent is a large landmass connected to a continent rather than a completely separate body of land.

This definition is particularly relevant in the case of the Indian subcontinent, which includes India, Pakistan, Bangladesh, Nepal, and Bhutan. The subcontinent is recognized for its unique cultural, historical, and geographical features while still being connected to the larger continent of Asia.

The other options provide definitions that do not capture the essence of what a subcontinent is. A large island separated by water typically pertains to islands rather than subcontinents, a small mountain range does not represent the scale or nature of a subcontinent, and a desert region with extreme climates describes a specific type of biome rather than the broader geographical definition of subcontinents.