Read the excerpt from poe’s "the fall of the house of usher." its evidence -- the evidence of the sentience -- was to be seen, he said, (and here i started as he spoke,) in the gradual yet certain condensation of an atmosphere of their own about the waters and the walls. the result was discoverable, he added, in that silent, yet importunate and terrible influence which for centuries had moulded the destinies of his family, and which made him what i now saw him -- what he was. such opinions need no comment, and i will make none. based on this excerpt, the narrator seems supportive of usher’s theory. skeptical of usher’s theory. curious about the history of the house. analytical about the history of the house.

skeptical of Usher's theory.

Explanation:

Read the excerpt from Poe’s "The Fall of the House of Usher." Its evidence -- the evidence of the sentience -- was to be seen, he said, (and here I started as he spoke,) in the gradual yet certain condensation of an atmosphere of their own about the waters and the walls. The result was discoverable, he added, in that silent, yet importunate and terrible influence which for centuries had moulded the destinies of his family, and which made him what I now saw him -- what he was. Such opinions need no comment, and I will make none

From the excerpt, the narrator shows some skepticism of Usher's Theory

... in that silent, yet importunate and terrible influence which for centuries had moulded the destinies of his family, and which made him what I now saw him -- what he was. Such opinions need no comment, and I will make none.

This line showed that the narrator did not agree with Usher's opinion, but he decided to be quiet as he felt his opinion needs no response. His conclusion is that Usher's theory was based on the importunate and  terrible influence upon he is family.

i believe that's the correct answer