Who among the following was called as ‘Ajatshatru’ by Gandhiji?

The correct answer is Option 4- Dr. Rajendra Prasad

Gandhiji called Dr. Rajendra Prasad as Ajatshatru, which means "one who has no enemies". This was because Dr. Prasad was known for his gentle and humble nature, and he was respected by all sections of Indian society. He was also a close associate of Gandhiji and played a leading role in the Indian independence movement.

Lala Lajpat Rai, Bal Gangadhar Tilak, and Bhagat Singh were all prominent leaders of the Indian independence movement, but they were not called Ajatshatru by Gandhiji.