The correct answer is A. Jhajjar.
Dhulendi fair is held in the Jhajjar district of Haryana. It is a major fair that is held every year in the month of February. The fair is a celebration of the Holi festival and is a time for people to come together and enjoy the festivities. The fair features a variety of activities, including music, dance, food, and games. It is a popular tourist destination and attracts people from all over the country.
Option B, Hisar, is incorrect because the Dhulendi fair is not held in Hisar. The Dhulendi fair is held in the Jhajjar district of Haryana.
Option C, Faridabad, is incorrect because the Dhulendi fair is not held in Faridabad. The Dhulendi fair is held in the Jhajjar district of Haryana.
Option D, Ambala, is incorrect because the Dhulendi fair is not held in Ambala. The Dhulendi fair is held in the Jhajjar district of Haryana.