Who is referred to as 'Frontier Gandhi'?

Correct option is B

The correct answer is (b) Khan Abdul Ghaffar Khan
Khan Abdul Ghaffar Khan, also known as Bacha Khan, is famously referred to as the 'Frontier Gandhi'. He was a Pashtun independence activist who founded the Khudai Khidmatgar ("Servants of God") movement in 1929, which was a non-violent resistance movement against British rule in India. Much like Mahatma Gandhi, Ghaffar Khan was a staunch advocate for non-violent protest and worked closely with Gandhi during the Indian independence movement. His commitment to non-violence and his leadership in the Pashtun regions of British India earned him this nickname, reflecting his philosophical similarities with Mahatma Gandhi.
Khan Abdul Ghaffar Khan was deeply influenced by Gandhi's ideals and methods, and his efforts were primarily focused in the North-West Frontier Province (now in Pakistan), where he mobilized the Pashtun community against British colonial rule. His dedication to the cause of Indian independence and his peaceful methods of resistance left a lasting impact on the region and the broader movement for independence.