Which NWFP leader was known as Frontier Gandhi?

Abdul Ghaffar Khan

The correct answer is Option 3 - Abdul Ghaffar Khan

Khan Abdul Ghaffar Khan, leader of the North Western Frontier Province was known as Frontier Gandhi.

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.