There is not discernible difference between them.
Answer: They wanted to prove that segregated buses were illegal.
Explanation: They want to bring it to court but they need the arrest of black rider so they have something to say that is illegal they shouldn't get arrested for something like that and that its illegal.
Answer:
number 4 is the correct answer
<span>parallel Structure i</span>s the repetition of a chosen grammatical form within a sentence. By making each compared item or idea in your sentence follow the same grammatical pattern, you create a parallel construction.