The correct answer is (b), Mahatma Gandhi.
Satyagraha is a word coined by Mahatma Gandhi to describe his philosophy of nonviolent resistance. It is a combination of the Sanskrit words satya (truth) and agraha (firmness). Gandhi believed that satyagraha was the only way to achieve true freedom and social justice. He used it to great effect in the Indian independence movement, and it has since been adopted by other movements for social change around the world.
Harilal Gandhi was Mahatma Gandhi’s eldest son. He was a troubled figure who struggled with alcoholism and drug addiction. He was eventually disowned by his father.
Ramdas Gandhi was Mahatma Gandhi’s second son. He was a devout Hindu and a follower of his father’s teachings. He worked closely with his father in the Indian independence movement.
Manilal Gandhi was Mahatma Gandhi’s third son. He was a lawyer and a social activist. He worked with his father in the Indian independence movement, and he also campaigned for the rights of Indians in South Africa.