The Bhoodan Movement was initiated by Vinoba Bhave.

Option 1: Ram Prasad Bismil was a prominent figure in the Indian independence movement, but he did not initiate the Bhoodan Movement.

Option 2: Vinoba Bhave is the correct answer. He was an important social reformer and follower of Mahatma Gandhi. Bhave played a crucial role in the Bhoodan Movement, which aimed to promote land reforms and voluntary land donation by wealthy landowners to landless farmers.

Option 3: Mahatma Gandhi, while a major influence on Vinoba Bhave and a proponent of land reforms, did not initiate the Bhoodan Movement himself.

Option 4: Kanhu Murmu was a tribal leader known for his role in the Santal rebellion in the late 19th century. He is not associated with the Bhoodan Movement.

In summary, Vinoba Bhave, not Ram Prasad Bismil, Mahatma Gandhi, or Kanhu Murmu, initiated the Bhoodan Movement.