What is the complete path along which an electric current travels called?

The term used to describe the complete path along which an electric current travels is called a circuit. A circuit includes all the components necessary for the flow of electricity, such as conductors (wires), a power source (like a battery), and any load (like a light bulb) that consumes electricity. The design of a circuit ensures that the electric current has a continual and unbroken route to follow, enabling it to perform work, such as lighting a bulb or powering a motor.

While the other terms might evoke elements of electrical systems, they do not capture the full concept of a pathway for current. A loop generally refers to a specific part of a circuit but does not encompass all possible configurations. Pathway is a broader term that can apply to many types of movement or flow, not limited to electrical current. Network can imply a more complex arrangement, such as in telecommunications or multiple circuits, but it does not specifically denote a singular, complete path for electric current. Hence, the most accurate term to describe the entire flow of electricity is "circuit."