Which option is a folding door?

• A. Bi-Fold Door
• B. Sliding Door
• C. Pocket Door
• D. French Door

Answer: (A)

Folding doors use hinged panels that fold together, stacking neatly to the side as you open. This folding action creates a wide opening without the door swinging into the room, which is the defining feature of a folding door. The option that fits this description is the bi-fold door, typically with two panels connected by hinges that fold along a track. In contrast, sliding doors have panels that slide, pocket doors slide into the wall, and French doors are two hinged doors that swing open.