The device used by the author in this excerpt to show that the Grand Canyon was ruined by the dam, is C. a Description.
Edward Abbey in "Beyond the Wall: Essays from the Outside" described the way the Grand Canyon looked before and after the dam was constructed.
This description showed that before the dam, the Grand Canyon was much better than it became after the dam which proved that the dam runed the Canyon.
Find out more on the device used by the author at https://brainly.com/question/10585268.
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