ANSWER is option Shivalik.Shivalik rangeThere are series of several parallel or converging ranges in the Himalayas.The ranges are separated by deep valleys creating a highly dissected topography.The southern slopes have steep gradients and northern slopes have comparatively gentler slopes.Most of the Himalayan ranges fall in India, Nepal and Bhutan. The northern slopes are partly situated in Tibet (trans-Himalayas) while the western extremity lies in Pakistan, Afghanistan and Central Asia.The Himalayan ranges are : Shivaliks or outer Himalayas, Lesser or MIDDLE Himalayas, The Greater Himalayas, The Trans Himalayas or Tibetan Himalayas, and the Eastern Hills i.e PURVANCHAL: A chain of hills in North-East India.Shivalik RANGE or outer Himalayas are located in between the Great PLAINS and Lesser Himalayas. The altitude of Shivalik Range varies from 600 to 1500 metres.It runs for a distance of 2,400 km from the Potwar Plateau to the Brahmaputra valley.The southern slopes of Shivalik Range are steep while the northern slopes are gentle.