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The sample answer was:
The father should rely on appeals to authority and emotion. His daughter will respond better to the argument if he reminds her of his authority in the manner and his concern for her safety. He may also persuade her by sharing details about how fun it would be to participate in swim activities with other children. The scientific expert should rely on appeals to authority and logic. The audience will more likely accept the evidence cited when they know that the person is a respected authority in the field.
Explanation: