Correct Answer: (c) Kerala
Solution:Onam is an annual Hindu festival with origins in the state of Kerala in India. It is a ten-day harvest festival that is celebrated with great enthusiasm and traditional fervor by the people of Kerala. The festival is celebrated in the Malayalam month of Chingam, which usually falls in August or September according to the Gregorian calendar. Onam is believed to be the homecoming of King Maha Mahabali, a legendary ruler who is said to have ruled over Kerala in ancient times.