The correct answer is: C. Gulab Singh
Gulab Singh was the first Dogra ruler of Jammu and Kashmir. He established the first high schools and colleges in the state in the 19th century.
A. Ranjit Singh was the founder of the Sikh Empire in the 19th century. He did not establish any high schools or colleges in Jammu and Kashmir.
B. Pratap Singh was the son of Ranjit Singh and the ruler of the Sikh Empire after his father’s death. He did not establish any high schools or colleges in Jammu and Kashmir.
D. None of these is the correct answer.