Which of the following products historically contained asbestos?

The correct choice highlights that insulation and roofing materials historically contained asbestos due to the mineral's exceptional insulating properties and resistance to heat and fire. Asbestos was widely used in various building materials, particularly in construction, where safety from fire hazards was a significant concern.

Insulation products such as pipe insulation, duct insulation, and ceiling tiles often included asbestos to enhance their thermal resistance. Roofing materials, including shingles, were also manufactured with asbestos to provide durability and fire resistance. The use of asbestos in these applications persisted for many decades until its dangerous health implications were more broadly understood.

In contrast, while paints and varnishes did occasionally contain asbestos, it was not a primary component. Similarly, sofas and carpets are not typically associated with asbestos use, although some older products might have used it in fire-resistant treatments. Glass and ceramics also do not have a history of significant asbestos inclusion, primarily owing to the different manufacturing processes involved.