Answer:
The answer is: It establishes the credibility of the author.
Explanation:
This is an excerpt from John of the Mountains: The Unpublished Journals of John Muir. John Muir, America's pioneer conservationist and father of the national park system. This passage demonstrates his knowledge of the area as well as his familiarity with the various tree species which inhabit it.
Answer:
OB
Explanation:
This makes sure Victor's topic is focused on one thing instead of getting lost in a broad group, it allows Victor to present detailed information on his one specific topic instead of vague information about a broad topic.