Correct Answer: Assam .

Solution : The correct option is - Assam

In the northeastern Indian state of Assam, Bihu is one of the most important festivals. 'Rongali' or 'Bohag Bihu' is observed in April, 'Kongali' or 'Kati Bihu' is observed in October or November, and 'Bhogali' or 'Magh Bihu' is observed in January.  The spring festival is celebrated by the Rongali Bihu, which is the most significant of the three. The harvest celebration of Bhogali Bihu or Magh Bihu features communal feasts. The Kongali Bihu, also known as the Kati Bihu, is an animistic celebration that reflects a time of limited supplies.