Answer & Explanation:
Rhetorical techniques are important when trying to convince someone to do something. In Kennedy's Rice Stadium Moon Speech, he is trying to convince the students at the university and the larger audience to support a space program. When trying to convince these people that a space program was worthwhile, it was helpful for Kennedy to use rhetorical techniques.
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They hade to rescure him because he wanted to come home and lost his will to go on.
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Answer: D. Colleges put too much emphasis on standard test scores.
A controversial argument is one which is likely to cause disagreement among people. Controversial arguments often cause disputes or debates among people with different points of view. In this case, while the author thinks that colleges put too much emphasis on test scores, other people participating in the conversation might disagree with the statement and might want to debate it.