The correct answer is: d) The Indo-Gangetic Plain.
The Indo-Gangetic Plain is a vast plain in the northern part of India and Pakistan. It is the world’s largest alluvial plain, and is home to more than half of India’s population. The plain is formed by the Indus and Ganges rivers, which flow from the Himalayas in the north to the Bay of Bengal in the south. The plain is a fertile agricultural region, and is also home to a number of major cities, including Delhi, Lahore, and Kolkata.
The Northern Mountains are a mountain range that runs along the northern border of India. The mountains are part of the Himalayas, and are the highest mountain range in the world. The Northern Mountains are a popular tourist destination, and are also home to a number of important religious sites.
The Coastal Plains are a narrow strip of land that runs along the coast of India. The plains are a fertile agricultural region, and are also home to a number of major cities, including Mumbai, Chennai, and Kolkata.
The Peninsular Plateau is a large plateau that covers the southern part of India. The plateau is a dry and arid region, and is home to a number of important historical and cultural sites.