The Himalayas originated from the Tethys geosyncline. Millions of years ago, a long, narrow, shallow sea called the Tethys existed between the northern Angaraland and southern Gondwanaland. As the Indian plate moved north, the sediments deposited in the Tethys were compressed, folded and uplifted to form the Himalayan mountain system. ANSWER: (C) Tethys