The correct answer is A. Thanesar.
The Vardhana dynasty was a Hindu dynasty that ruled over parts of northern India from the 6th to the 8th centuries CE. The dynasty was founded by Harshavardhana, who ruled from 606 to 647 CE. Harshavardhana was a powerful ruler who extended his empire from the Himalayas to the Narmada River. He was also a patron of the arts and literature.
The Vardhana dynasty was founded at Thanesar, which is now a city in Haryana, India. Thanesar was an important city in the ancient world and was the capital of the Kuru kingdom. It is also the birthplace of the Hindu god Krishna.
The other options are incorrect. Rohtak is a city in Haryana, India. Panipat is a city in Haryana, India. Kurukshetra is a city in Haryana, India.