Well saying dunno is an error in formal/academic writing. In academic writing you would have to write, i do not know, though.
Answer:. A girl finds out that her best friend is her sister. The audience has known all along.\
Answer: C) It shows the healing power of nature.
Explanation: In the given excerpt from "Frankenstein" by Mary Shelley we can see the description of a beautiful scene with the frozen sea, very high mountains with peaks full of ice, all surrounded by the sunlight, and the speaker says that his heart was full of sorrow, but seeing that amazing view, he felt joy, so the excerpt shows the healing power of nature, in this case represented by the emotional healing.
