The correct answer is: C. 1976
Haryana Tourism Corporation (HTC) was established in 1976 by the Government of Haryana. It is a state-owned enterprise that is responsible for promoting tourism in the state of Haryana. HTC offers a variety of tourism products and services, including hotels, resorts, restaurants, and travel packages. It also operates a number of tourist attractions, such as the Surajkund Mela and the Pinjore Gardens.
Option A is incorrect because Haryana Tourism Corporation was established in 1976, not 1966.
Option B is incorrect because Haryana Tourism Corporation was established in 1976, not 1996.
Option D is incorrect because Haryana Tourism Corporation was established in 1976, not 1968.