The correct option is D Mahatma Gandhi
The idea of satyagraha emphasised the power of truth and the need to search for truth. It suggested that if the cause was true, if the struggle was against injustice, then physical force was not necessary to fight the oppressor. People – including the oppressors – had to be persuaded to see the truth, instead of being forced to accept truth through the use of violence. By this struggle, truth was bound to ultimately triumph.