Usher's madness begins to increase because he can hear the sound of Madeline below.
Even though his sister is buried in the basement, he can constantly hear her scratching her coffin. He was tortured by these sounds until the protagonist came to visit him so he could share his troubles with him. Usher is afraid of his 'undead' sister and of dying himself, which is why he grows crazier and crazier by the day, until he is finally killed by his own sister in the end.
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This is an excerpt from John of the Mountains: The Unpublished Journals of John Muir.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.
4 because it doesn't relate to the other 3 answers
