I insist you go first
the park appealed against closure
a wisp of hair
Answer: C) by encouraging white leaders to allow nonviolent protests.
Explanation: In the given excerpt from Dr. Martin Luther King’s “Letter from Birmingham Jail” we can see the description of the black people's sentiments (resentents and latent frustrations) and how Martin Luther King says they will need to release those feelings. To conclude this claim he encourages white leaders to allow nonviolent protests, as he says in another part of that letter: "I have earnestly opposed violent tension, but there is a type of constructive, nonviolent tension which is necessary for growth."
I believe that the attitude of the speaker would be defiant. Go to the following web site for much more information, because it helps to explain it in details.
Something that is excepted for example if there was a public place where it says no smoking and someone was smoking there it would be unexceptable.