His office is always in apple-pie order. What does the idiom mean?

The correct answer is Neat & tidy.

• The idiom “in apple-pie order” means that something is perfectly arranged, very neat, and tidy. It suggests a state of impeccable organization.
• Option A (Neat & tidy) accurately captures the meaning of the idiom, indicating a well-organized and clean state.
• Option B (Disordered) is incorrect as it is the direct opposite of being in apple-pie order.
• Option C (Mismanaged) is incorrect; while a disordered office might be mismanaged, the idiom specifically refers to the physical state of tidiness, not the quality of management.
• Option D (Ornamental) is incorrect; something ornamental is decorative, but it doesn't necessarily imply neatness or tidiness. An ornamental office could still be messy.