Which term is a material consisting of extremely fine filaments of glass embedded in various resins?

• A. Epitaph
• B. Extendover
• C. Fiberglass
• D. Excelsior

Answer: (C)

Fiberglass is a composite material formed from extremely fine glass filaments embedded in a resin matrix. The glass fibers provide strength and stiffness, while the resin binds them to create a durable, lightweight material. In funeral service merchandising, fiberglass is used for caskets and related components because it resists moisture and corrosion and can be molded into various shapes. The description in the question—extremely fine filaments of glass embedded in resins—matches fiberglass exactly, making it the best choice. An epitaph is simply an inscription on a tombstone, not a material. Excelsior refers to shredded wood used as filler or cushioning. Extendover is a term related to casket design, not a glass-fiber material.