The correct answer is D) Mohandas Gandhi.
Martin Luther King was an American pastor of the Baptist Church and a leading activist that had a crucial role in front of the civil rights movement for Afro-Americans, against the Vietnam war, and against poverty. He organized many peaceful activities demanding the right to vote, to end racial discrimination and segregation, and other basic civil rights for Afro-Americans. For these non-violent activities in favor of basic Human Rights, he received the Peace Nobel Price in 1964.
He was strongly influenced by Mohandas Karamanchad Gandhi, the most outstanding leader of the Indian independence movement against the British Raj. He extended non-violent protests and civil disobedience in order to fight the British rule and achieved the independence of India in 1947.