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A
A solid piece of natural wood
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B
An engineered wood made of thin layers (plies) of wood glued together, usually with grains alternating for strength
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C
A type of metal
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D
A plastic sheet
Why this is the answer
PLYWOOD is an ENGINEERED WOOD made of thin layers ('plies' or veneers) of wood GLUED together, with the grain of each layer usually ALTERNATING (perpendicular) to the next for strength and resistance to warping/splitting. ASVAB Shop Information tests materials. The cross-grain layering makes plywood strong in multiple directions and more dimensionally stable than solid wood. Other engineered woods: MDF (medium-density fiberboard), particleboard, OSB. Knowing plywood is layered, glued wood with alternating grain (for strength) is commonly tested.
Source: ASVAB Shop Information — Plywood