The correct answer is: A. Raja Fateh Prakash.
The Nalagarh Sanad was a document issued by the Mughal emperor Akbar to Raja Fateh Prakash of Nalagarh in 1572. The sanad granted the Raja the right to rule over the Nalagarh state in return for his loyalty to the Mughal empire.
Raja Fateh Prakash was a Rajput ruler who was born in 1540. He was the son of Raja Rai Singh of Nalagarh. Raja Fateh Prakash succeeded his father as the ruler of Nalagarh in 1562. He ruled over Nalagarh for 10 years until his death in 1572.
Raja Fateh Prakash was a loyal vassal of the Mughal emperor Akbar. He fought alongside Akbar in several battles, including the Battle of Haldighati in 1576. Raja Fateh Prakash was also a patron of the arts and literature. He built several temples and palaces in Nalagarh.
The Nalagarh Sanad is an important document in the history of the Nalagarh state. It is a symbol of the relationship between the Mughal empire and the Nalagarh state. The sanad also shows the loyalty of Raja Fateh Prakash to the Mughal emperor Akbar.
The other options are incorrect because they are not the rulers of Nalagarh to whom the Nalagarh Sanad was given.
Option B: Rana Bahadur Singh was the ruler of Mewar from 1778 to 1803. He was not the ruler of Nalagarh.
Option C: Rana Mohinder Singh was the ruler of Mewar from 1803 to 1818. He was not the ruler of Nalagarh.
Option D: Raja Ram Saran Singh was the ruler of Nalagarh from 1846 to 1857. He was not the ruler of Nalagarh when the Nalagarh Sanad was issued.