Concept:The Ganges River originates from a glacier in the western Himalayas of Uttarakhand.Explanation:Ganga rises from the Gangotri glacier in Uttarkashi district, Uttarakhand.This glacier is one of the largest in the Himalayas, with a volume over 27 cubic kilometres.Other glaciers like Milam (source of Gori Ganga) or Ladakh glacier are not the source of the main Ganga.Answer:C. Gangotri glacier