Correct Answer: (b) Shiwalik and Great Himalaya
Note: The Himalayan Range consists of parallel mountain ranges. It includes Great Himalayas, Trans Himalayan range, Middle Himalaya and the Shiwalik. The mountain range which runs parallel between the Shiwalik in the south and the Great Himalayas in the north is classified as the Middle Himalayas, sometimes also called Lesser Himalaya or Himachal or Lower Himalayas. It has an intricate system of ranges that have an average width of 50 km having elevation varying from 3,700 to 4,500 m above sea level. Pir Panjal, the Dhauladhar, the Mussoorie Range, the Nag Tibba and Mahabharat are some of the important ranges of the Middle Himalaya.