The correct option is C the hall in which Akbar held discussion with scholars at various religions
The Ibadat Khana or House of Worship was a prayer or a meeting room built by Akbar at his palace in Fatehpur Sikri. It was built to gather spiritual leaders of different religious grounds so as to conduct a discussion on the teachings of the respective religious leaders. Locals and visitors to the city were often invited to participate in debates and discussions in this room.