When constructing an outdoor room, trees are excellent materials for use in developing the outdoor ceiling, called a(n)

• A. Trellis
• B. Pergola
• C. Canopy
• D. Arch

Answer: (C)

An outdoor room gains its sense of enclosure from an overhead cover, and trees provide a natural ceiling by forming a canopy. A canopy is the upper layer of leaves and branches that shade and enclose the space, creating a defined, comfortable environment beneath. This distinguishes it from a trellis, which is just a lattice framework used to support climbing plants; from a pergola, which is a freestanding structure with posts and an open roof that may offer shade but doesn’t inherently provide a continuous leafy ceiling; and from an arch, which is a curved architectural element marking an opening rather than creating overhead cover. So the term that best fits a ceiling-like cover created by trees in an outdoor room is canopy.