The correct option is B Marathas
Marathas played a major role in the decline of Mughal power. The Maratha War of Independence, were fought between the Maratha Empire and the Mughal Empire from 1680 to 1707. The Deccan Wars started in 1680 with the Mughal emperor Aurangzeb’s invasion of the Maratha enclave in Bijapur established by Chatrapati Shivaji. After the death of Aurangzeb, Marathas defeated the Mughals in Delhi and Bhopal, and extended their empire till Panipat at their peak in 1758.