The correct answer is (b), Prithvipati Shah.
Prithvipati Shah was the king of Garhwal from 1657 to 1707. He was a powerful and influential ruler who expanded the kingdom of Garhwal. He was also a patron of the arts and literature.
In 1675, Prithvipati Shah gave land to Sikh Guru Ram Rai in Dehradun. This land was used to build a Gurdwara, which is still there today.
The other options are incorrect.
(a) Fatehpati Shah was the king of Garhwal from 1635 to 1657. He was the father of Prithvipati Shah.
(c) Pradeep Shah was the king of Garhwal from 1707 to 1712. He was the son of Prithvipati Shah.
(d) Medini Shah was the king of Garhwal from 1712 to 1730. He was the son of Pradeep Shah.