Explanation:

- The Kuka Movement was a significant movement in Punjab during the 19th century advocating for social and religious reform.

- Option 1: Ram Singh: He was indeed the head of the Kuka Movement and played a crucial role in its leadership.

- Option 2: Daya Ram: There is no known connection of Daya Ram being involved with the leadership of the Kuka Movement.

- Option 3: Sohan Singh: Sohan Singh was an influential figure in Sikh history but was not the leader of the Kuka Movement.

- Option 4: Lala Hardiyal: He was known for his role in the Indian independence movement but not related to the Kuka Movement.

Correct Answer: Option 1: Ram Singh