How can language be both a highway and a wall???

Review the previous excerpt from barbra jordan’s speech. answer the following 3 questions in the space below.

Unity in a paragraph means: my writing persuades my readers to agree with the argument i am presenting. the paragraph discusses and supports one thought throughout the entire paragraph. all sentences in a paragraph are the same length and structure. the first sentence and the last sentence echo the exact same thought.

What does the speaker do in the beginning of her speech that conveys she is a credible,reliable speaker