Which Physiographic division of India has the highest population density?

Indo-Gangetic Plain

The correct answer is Option (2) → Indo-Gangetic Plain.

The Indo-Gangetic Plain stretches from Punjab in the northwest to West Bengal in the east and is known for its fertile alluvial soil, abundant water resources from the Indus and Ganges rivers, and favorable climate for agriculture. These factors have historically attracted settlements and supported high population densities.

The Himalaya, Deccan Plateau, and Chhota Nagpur Plateau, while having pockets of dense population in certain regions, generally have harsher climates, less fertile land, and more challenging terrains, leading to lower overall population densities compared to the Indo-Gangetic Plain.