Solution:S.P. Chatterjee divided the peninsular region into 8 parts-(1) The North Central Highlands.
(2) The South Central Highlands.
(3) The Eastern Plateau.
(4) The Meghalaya Plateau.
(5) The North Deccan.
(6) The South Deccan.
(7) The Western Ghats or Sahyadri
(8) The Eastern Ghats.
The Mahanadi Basin is included in the North Deccan Peninsula. The North Deccan (Maharashtra Plateau): The plateau includes the entire state of Maharashtra, except the Konkan coast and the Sahyadri. The topography includes - The Mahanadi Basin, The Chhattisgarh Plains, Garjat Hills, and Dandakaranya.