Which of the following is not a material used in the construction of a burial vault?

• A. Pressed wood
• B. Concrete
• C. Steel
• D. Fiberglass

Answer: (A)

The key idea is understanding which materials provide lasting protection and a watertight enclosure for a burial vault. Vaults are designed to be durable and resist moisture and soil pressure over many years. Concrete is a traditional choice because it’s strong and can be sealed well. Steel offers high strength and protective qualities. Fiberglass and other composites provide corrosion resistance with lighter weight. Pressed wood, however, isn’t suitable for long-term vaults because wood is susceptible to moisture, decay, warping, and infiltration over time, which would compromise durability and the seal. So pressed wood isn’t used for burial vault construction.