The correct answer is: D. All of the above.
Sohrai is a harvest festival celebrated by the tribal people of Jharkhand, Odisha, Bihar, Chhattisgarh, and West Bengal. It is a thanksgiving festival to the Sun God for the good harvest. The cattle are also worshipped on this day as they are considered to be an important part of the agricultural cycle.
Chhath Puja is a Hindu festival dedicated to the Sun God. It is celebrated once a year, usually in the month of November. The festival involves a four-day fast, during which devotees offer prayers to the Sun God for the well-being of their family and friends. The last day of the festival is the most important, when devotees take a dip in the river and offer prayers to the setting sun.
Chhath is the only festival where the Sun is worshipped during setting also. This is because the Sun is considered to be the source of all life and energy. By worshipping the Sun during setting, devotees believe that they are ensuring the well-being of their family and friends.