What is the primary use of asbestos-containing materials in construction?

Asbestos-containing materials have been predominantly used in construction for insulation, roofing, and cement applications due to their unique properties. Asbestos is well-known for its resistance to heat and fire, making it an ideal choice for insulating buildings and protecting them from temperature extremes. In roofing, asbestos was used in shingles and roofing felt to provide durability and fire resistance. Additionally, asbestos was often mixed into cement products to enhance their strength and durability, which is why many cement-based materials from past construction may contain asbestos.

While other materials mentioned in the choices have their own uses in construction, they do not align with the primary applications of asbestos. Electrical wiring and plumbing fixtures have evolved to utilize safer, more effective materials, and while decorative elements may incorporate various materials, they are not a primary use of asbestos. Thus, the widespread applications of insulation, roofing, and cement highlight the primary role of asbestos in construction during its peak use.