Which wiring component is moisture resistant and flame retardant?

The correct answer highlighting the wiring component that is moisture resistant and flame retardant is nonmetallic sheathed cable.

Nonmetallic sheathed cable, often referred to by its popular brand names such as Romex, is designed for various indoor applications. Its plastic outer layer provides resistance to moisture and certain environmental factors, making it suitable for use in areas where humidity levels may be present. Additionally, the materials used in this type of cable are crafted to decrease the risk of flames spreading along the wire, which adds an important layer of safety in residential and commercial structures.

Armored cable, while offering protection due to its metal sheath, is not inherently moisture resistant in the same way as nonmetallic sheathed cable. Conduit is primarily used to route and protect wires but is not specifically known for moisture resistance or flame retardancy in its conventional form. Electrical metallic tubing, similar to conduit, provides protection but does not possess the same moisture resistance or flame-retardant properties as nonmetallic sheathed cable. Therefore, the choice of nonmetallic sheathed cable as the correct answer emphasizes its dual protective features against moisture and fire hazards in electrical installations.