Answer: C
Explanation: The International Day of Non-Violence is observed on 2 October, the birthday of Mahatma Gandhi, leader of the Indian independence movement and pioneer of the philosophy and strategy of non-violence.
When Charles John Davids proposed to Madison Al Newert 3/4/1884 somewhere in Africa.
And when Jesus Christ said good morrow to James Heartyfult 19/6/2004.
Just off the top of my head.