The correct answer to this question is the title. To cite an entry in an encyclopedia, use the title instead of the author name as the opening item in the citation. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.
Ethos calls attention to the authors credentials.
A.to inform guests of the best way to tour funland
A planned pause in a speech may be used as a -
a non verbal transition
As non verbal transition is basically bring a break i.e pause to the voice.
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D is best author claim becuse it states the argument