The correct answer is (c) Pratap Shah.
Pratap Shah was the ruler of the Tehri state at the time of its merger in the Indian Union in 1949. He was the son of Narendra Shah, who had ruled the state from 1886 to 1905. Pratap Shah ascended to the throne in 1905 and ruled until his death in 1949.
During his reign, Pratap Shah oversaw a period of modernization and development in the Tehri state. He established schools, hospitals, and roads, and he also promoted agriculture and industry. He was a popular ruler, and he was known for his kindness and generosity.
In 1949, Pratap Shah agreed to merge the Tehri state with the Indian Union. This was a controversial decision, but Pratap Shah believed that it was in the best interests of his people. He was succeeded by his son, Manvendra Shah, who ruled the state until it was merged with Uttar Pradesh in 1950.
(a) Narendra Shah was the ruler of the Tehri state from 1886 to 1905. He was the father of Pratap Shah.
(b) Keerti Shah was the ruler of the Tehri state from 1789 to 1805. He was the grandfather of Pratap Shah.
(d) Manvendra Shah was the ruler of the Tehri state from 1949 to 1950. He was the son of Pratap Shah.