Final answer:
Ethos is used in a persuasive speech to establish credibility and authority on the topic.
Step-by-step explanation:
Ethos is used in a persuasive speech to help the speaker establish credibility and authority on the topic. By using ethos, the speaker appeals to the audience's sense of trust and belief in the speaker's character, knowledge, and expertise. This can be done by using personal experiences, qualifications, or referencing well-known professionals or experts in the field.
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