Answer:
As the leader of the nonviolent Civil Rights Movement of the 1950s and 1960s, Martin Luther King Jr.From his involvement in the Montgomery bus boycott in 1955 until his untimely death in 1968, King's message of change through peaceful means added to the movement's numbers and gave it its moral strength.
Segregation was described as wilderness as a way of indicating the inhumaneness of this treatment, for literally wilderness indicates a place without civilization or society.
Injustice is not always a wilderness, although it sometimes can be. Injustice acts within established society all the time -- sometimes, de jury, it can be under the guise of a law-abiding action, but in reality (de facto) it could be injustice. For example, Donald's Trump urge to deport and restrict immigrants from certain countries reflects injustice in an established environment (in my opinion, of course).
It might be C, since D isnt related to the topic, B is just one line from it, A is also not really related to the short story.
Im so so sorry if its wrong!