Who is known as the 'Frontier' Gandhi?

Khan Abdul Ghaffar Khan

The correct answer is Option (3) → Khan Abdul Ghaffar Khan

Khan Abdul Ghaffar Khan, also known as Bacha Khan or the "Frontier Gandhi," was a prominent political and spiritual leader from the North-West Frontier Province (NWFP, now Khyber Pakhtunkhwa) in British India. He was a key figure in the Indian independence movement and played a significant role in the political landscape during the pre-partition era.