In which of the following states of India is Onam, a harvest festival, primarily celebrated?

The correct option is Kerala.

Explanation:

Onam is an ancient and major annual harvest festival celebrated primarily in the state of Kerala, India. It is one of the most important cultural festivals for the people of Kerala, marking the end of the monsoon season and welcoming the harvest season.

Key highlights of Onam include:

1. Cultural Significance: The festival is celebrated in memory of the mythical King Mahabali, whose reign is considered a golden era of prosperity and justice in Kerala lore.

2. Celebrations: Festivities span ten days and feature traditional events such as Pookkalam (floral carpets), Vallam Kali (snake boat races), Pulikali (tiger dances), and Onasadya (a grand traditional feast served on banana leaves).