A floor deck is a sub floor covered by a ______ flooring.

• A. Upper
• B. Sand and gravel
• C. Finished
• D. Carpeted

Answer: (C)

Floor construction uses a floor deck as the subfloor, and the visible walking surface is created by finished flooring. The blank should name the general category of surface that covers the subfloor, not a specific material. Finished flooring covers a wide range of materials—wood, tile, vinyl, carpet, and more—so it accurately describes the final surface. The other options don’t fit because “upper” isn’t a type of floor covering, “sand and gravel” are base materials for substructure or concrete, and “carpeted” refers to a specific finish rather than the overall category of what covers a subfloor.