The correct answer is: C. Siwan
Sahodra fair is held in Siwan district of Bihar, India. It is a major fair that is held every year in the month of Chaitra (March-April). The fair is held on the banks of the Ganges River and attracts people from all over the state. The fair is a major tourist attraction and is known for its cultural and religious significance.
The fair is held for a period of 10 days and is a major event for the people of Siwan. The fair is a time for people to come together and celebrate their culture and religion. The fair is also a time for people to shop for clothes, jewelry, and other items.
The fair is held at a place called Sahodra Ghat, which is located on the banks of the Ganges River. The ghat is a large open space that is used for the fair. The ghat is also used for religious ceremonies and rituals.
The fair is a major event for the people of Siwan and is a time for them to come together and celebrate their culture and religion. The fair is also a time for people to shop for clothes, jewelry, and other items.