The correct answer is: Himalayas.
The Himalayas are the highest mountain range in the world, and they form a natural border between India and China. The hill ranges of Manipur are an extension of the Himalayas, and they run parallel to the Indo-Myanmar border. The Himalayas are a young mountain range, and they are still growing. The hill ranges of Manipur are also young, and they are still growing. The Himalayas are a major source of water for India, and they are also a major tourist destination. The hill ranges of Manipur are also a source of water, and they are also a popular tourist destination.
The Aravalli Range is a mountain range in northwestern India. It is the oldest mountain range in India, and it is made up of igneous and metamorphic rocks. The Aravalli Range is not an extension of the Himalayas.
The Western Ghats are a mountain range in western India. They are the second highest mountain range in India, and they are a major source of water for the Indian subcontinent. The Western Ghats are not an extension of the Himalayas.
The Vindhya Range is a mountain range in central India. It is the oldest mountain range in India, and it is made up of igneous and metamorphic rocks. The Vindhya Range is not an extension of the Himalayas.