Sulah-kul Festival is organised at

Agra
Aligarh
Etawah
Barabanki

The correct answer is (a) Agra.

Sulah-kul Festival is a cultural festival that is organized in Agra, India. It is a celebration of the culture and heritage of the city. The festival features a variety of events, including music, dance, art, and food. It is a popular tourist attraction and is a great way to experience the culture of Agra.

Agra is a city in the Indian state of Uttar Pradesh. It is located on the banks of the Yamuna River, about 200 kilometers (120 miles) south of Delhi. Agra is famous for its many historical monuments, including the Taj Mahal, which is one of the Seven Wonders of the World. The city is also home to a number of other important historical sites, such as the Agra Fort, Fatehpur Sikri, and the Jama Masjid.

Agra is a popular tourist destination, and is known for its beautiful architecture, delicious food, and friendly people. The city is also a major center for education and business. Agra is a vibrant and exciting city with a rich history and culture. It is a great place to visit for a holiday or to live and work.

The other options are incorrect because they are not cities in India where the Sulah-kul Festival is organized.