Which of the following is considered a current-carrying conductor?

A current-carrying conductor is defined as a conductor that is designed to carry electrical current during normal operation. Among the choices provided, the neutral conductor is specifically used to carry current back to the source in a typical electrical circuit. The neutral conductor serves as the return path for the current and carries this current under normal operating conditions.

In contrast, while the grounding electrode conductor and grounding conductor are important for safety and system integrity, their primary function is to provide a path for fault currents to ground, thereby reducing shock hazards and ensuring system protection. They do not typically carry current during regular operation like a neutral conductor does.

Therefore, the classification of the neutral conductor as a current-carrying conductor makes it the correct answer in this context. Understanding the roles and functions of these conductors is essential when dealing with electrical systems, as it defines how they are utilized and ensures compliance with safety standards.