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.
Internal summary verbal connection follows a main point and serves to remind the audience of what the speaker has expressed.
Internal summaries are the flip side of internal views. Rather than indicating what sub-points to follow in the speech, internal summaries remind listeners of which sub-points were discussed. Internal summaries are excellent ways to reinforce and clarify ideas that are essential for listeners to remember.
In short, it is restatement in the body of speech to the listeners of what speaker has said so far
Hence, the correct answer is Option D, Internal summary.
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Explanation it can also slow down photosynthesis. ... These mechanisms can shut photosynthesis down if sugaraccumulation is too high.