Final answer:
The section that best supports the importance of nonviolence in the civil rights movement is the one that acknowledges Dr. King as a living testimony to the moral force of non-violence and the efficacious approach of leaders like Gandhi and King.
Step-by-step explanation:
The most appropriate section that supports the importance of nonviolence in the context of the civil rights movement and Martin Luther King Jr.'s approach would be:
"B. As someone who stands here as a direct consequence of Dr. King's life work, I am living testimony to the moral force of non-violence. I know there's nothing weak — nothing passive — nothing naive — in the creed and lives of Gandhi and King."
This section encapsulates the essence of nonviolent resistance, highlighting the strength and courage it requires, and directly links it to the accomplishments of civil rights leaders like Martin Luther King Jr. and Mohandas Gandhi. It acknowledges that nonviolence is a powerful strategy for social change, which is evident in the successes of the civil rights movement, and emphasizes the influential and lasting impact of Dr. King's work on contemporary society.