Explanation:

- The Deccan Plateau: This is a large plateau in western and southern India, forming a significant portion of the Peninsular Plateau.

- The Central Highland: These are part of the Peninsular Plateau, located between the Aravallis and the Vindhyas.

- The Northern Plain: These are extensive plains in northern India made by sediments deposited by rivers. They are not part of the Peninsular Plateau.

- The North-eastern Plateau: This includes parts of Meghalaya, Nagaland, and other northeastern states, also considered an extension of the Peninsular Plateau.