For bonding conductors, which material is specifically required to be continuous and effectively bonded?

The requirement for bonding conductors to be continuous and effectively bonded means that the electrical connection must be strong and reliable to ensure safety and proper functioning. Copper is the correct answer because it is the most commonly used material for bonding conductors due to its excellent electrical conductivity, corrosion resistance, and mechanical strength. The effectiveness of a bonding system relies on the continuous nature of the conductor, and copper provides a high level of reliability in this role.

While options like aluminum and steel can be used for electrical applications, they do not always meet the same standards in terms of conductivity and bonding effectiveness as copper. Aluminum, for instance, can oxidize, which may hinder its performance without proper treatment. Steel is less conductive than copper and is typically not used as a bonding material. Plastic, on the other hand, is non-conductive and would not serve as a bonding conductor at all. This makes copper the best choice for maintaining the integrity of electrical systems through effective bonding.