Correct option is C
The Harappan site at Dholavira, located in Gujarat, India, was excavated by R.S. Bisht. Dholavira is one of the most prominent archaeological sites of the Indus Valley Civilization. This site is known for its advanced urban planning, including water conservation systems, reservoirs, and unique architecture. The excavation work has provided crucial insights into the culture and lifestyle of the people during the Harappan era.