Final answer:
A conductor is a wire or strand of wires that can conduct electricity, which is true. Conductors have free electrons or ions that allow electrical current to flow, and all conductors exhibit some resistance, while superconductors can conduct without energy loss.
Step-by-step explanation:
The statement provided is true: a conductor is indeed a single wire or combination of strands of wire not insulated from one another and is capable of carrying an electrical current. Conductors, such as metals and salty water, allow charges to move through them with relative ease. In conductors, some electrons are free and not bound to individual atoms, which allows them to move through the material, making it possible for electrical current to flow. These free electrons, as well as free ions in materials like salty water, are responsible for the conductivity of these substances. Additionally, all conductors possess some degree of resistance, but special materials known as superconductors can allow the movement of charge without any energy loss. It's also important to note that in a conductor carrying current, there exists an electric field that provides the energy needed to move the charges.