Answer:
"Without guests in the building, caretakers are getting creative in how they provide enrichment to animals," the aquarium said in a statement.
Explanation:
B is the answer because A, C, and D are facts and B is someone words saying it's the best part when other people think it's the worst part.
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.
Well, it is a hard choice between these and those, but I would say that the use Those is correct.