From the context clues in the passage, the word Annex MOST nearly means?

From the context clues in the passage, the word "Annex" most nearly means "Attic." The passage mentions that Anne Frank and her family hid from the Nazis in a secret annex above her father's office building in Amsterdam. This indicates that the annex refers to a concealed space above the office, which is commonly associated with an attic.

"Bedroom" is incorrect because an office building doesn’t have bedrooms. "Basement" is incorrect because a basement would be below the office building. "Kitchen" is incorrect because there would not be a kitchen in an office building.