The correct answer is option 1: South Africa. Mahatma Gandhi returned to India from South Africa in January 1915. Gandhi had spent 20 years in South Africa, where he fought against racial discrimination and injustice faced by the Indian community. He developed his philosophy of nonviolent resistance, also known as Satyagraha, during his time in South Africa. Gandhi`s return to India marked the beginning of his active involvement in the Indian independence movement. He became a prominent leader and played a crucial role in India`s struggle for freedom from British colonial rule. Gandhi`s teachings of nonviolence and civil disobedience inspired millions of people and his impact on Indian history and the world continues to be profound.