The correct answer is: b) Middle Ganga Plain.
The Middle Ganga Plain is a vast alluvial plain in northern India that is formed by the deposition of sediments from the Ganges River. The plain is located between the Himalayas in the north and the Vindhya Range in the south. It is a major agricultural region and is home to a large population.
The Himalayan foothills are a mountain range that lies to the north of the Middle Ganga Plain. The foothills are a region of high rainfall and are covered in forests.
The Chota Nagpur Plateau is a plateau that lies to the south of the Middle Ganga Plain. The plateau is a region of low rainfall and is covered in grasslands.
The Deccan Plateau is a plateau that lies to the south of the Chota Nagpur Plateau. The plateau is a region of high rainfall and is covered in forests.
The Middle Ganga Plain is the most fertile of the four regions. It is a major agricultural region and is home to a large population. The Himalayan foothills, the Chota Nagpur Plateau, and the Deccan Plateau are all less fertile than the Middle Ganga Plain.