The correct option is C 1666 A.D
Shivaji visited the Mughal court in 1666 A.D. Shivaji was induce to visit the Mughal court to receive the honour and lets say appointment papers.Shivaji on the other hand saw this opportunity to get a legitimate Viceroyalty and later expands as an independent ruler of the whole of Deccan at the expense of the Mughals.