The answer above is incorrect.
An adjective can actually describe both a C) noun and a pronoun.
For example:
John is handsome.
He is tall.
Answer:At the start of the novel, Bilbo enjoys a simple, comfortable life. When he returns home, Gandalf points out to him that he has changed as a hobbit: Gandalf looked at him. "My dear Bilbo!" he said. "Something is the matter with you! You are not the hobbit that you were."
Explanation:
The usage of unreliable narrator and jumped pacing result in a mystery. As it is revealed in the beginning that the narrator is unreliable, possibly from a mental disorder, and begins to talk about the wallpaper. The thorough descriprions of the wallpaper mostly through diary entries bring mystery into the story as readers await to see what the truth about the yellow wallpaper.