Correct option is C
The correct answer is: (C) Indus, Ganga and Brahmaputra
The Great Plains of India were primarily formed due to the deposition by the rivers Indus, Ganga, and Brahmaputra.
These rivers, along with their tributaries, have carried large amounts of silt from the Himalayan mountain ranges, which were deposited over time, forming the alluvial plains that stretch across northern India, covering states like Punjab, Haryana, Uttar Pradesh, and Bengal.
The Indus, Ganga, and Brahmaputra are major river systems that have significantly contributed to the creation of the fertile plains, making them ideal for agriculture.
The Great Plains are one of the most densely populated regions in India, with agriculture as the primary occupation due to the rich alluvial soil deposited by these rivers.
The rivers also help in irrigation, further supporting the agrarian economy of the region.
The Indus system forms the western part, the Ganga system forms the central part, and the Brahmaputra system influences the eastern part of the plains.