In "Letter from a Birmingham Jail" how did this structure help strengthen Martin Luther King Jr.'s argument?

Read the excerpt from "the crab that played with the sea." now, while the two were talking together, pau amma the crab, who was next in the game, scuttled off sideways and stepped into the sea, saying to himself, ‘i will play my play alone in the deep waters, and i will never be obedient to this son of adam.' nobody saw him go away except the little girl-daughter where she leaned on the man's shoulder. and the play went on till there were no more animals left without orders; and the eldest magician wiped the fine dust off his hands and walked about the world to see how the animals were playing. which conclusion about pau amma does this excerpt support? he likes swimming. he is afraid of humans. he thinks he is better than other animals. he enjoys spending time with other animals.