What is the function of a Ground Fault Circuit Interrupter (GFCI)?

A Ground Fault Circuit Interrupter (GFCI) is designed specifically to enhance safety by protecting individuals from electrical shocks that can occur due to ground faults. When a GFCI detects an imbalance between the incoming and outgoing current in a circuit, which could signify that some current is flowing through an unintended path (such as through a person), it quickly disconnects the power supply to prevent serious harm. This rapid disconnection is vital in environments where water is present, such as bathrooms, kitchens, and outdoor areas, where the risk of electrical shock is higher.

The other options do not accurately describe the primary purpose of a GFCI. While reducing energy consumption and regulating voltage levels are important aspects of electrical management, they are not functions attributed to a GFCI. Enhancing communication between electrical devices is also unrelated to the safety function of a GFCI. Thus, the correct choice highlights the essential protective role that GFCIs serve in safeguarding individuals from electrical hazards.