Correct Option
The Tehri Dam is situated at the confluence of the Bhagirathi and Bhilangana rivers in the Tehri district of Uttarakhand. Label 'C' on the provided map accurately indicates this specific confluence point, which is the site of the dam.
This multi-purpose rock and earth-fill dam is one of India's tallest dams. It plays a crucial role in hydropower generation, irrigation, and flood control for the region.
Incorrect Options
Options A, B, and D are incorrect as they do not mark the actual location of the Tehri Dam. These points are positioned either upstream along the Bhilangana river or downstream, away from the confluence of the Bhagirathi and Bhilangana rivers where the dam is constructed.