The path along which electric current flows is called:

Two of the supplied alternatives let the passage of current through them, whilst one option blocks current and another opposes it. Therefore, we must determine the best choice from the current conductor.
We are aware that current refers to the movement of charges through a conductor or other conducting substance. Since it is said that the path through which electric current travels is shown, an electrical circuit must unquestionably be there. Contrarily, conductors and insulators are types of materials that either let or prevent the flow of current. The resistor, on the other hand, is an electrical component that opposes the passage of charges.

A source, a load, such as a resistor, capacitor, or bulb, and a few connecting wires make up an electrical circuit. Microprocessors, transistors, and integrated circuits are examples of additional electronic parts. These can be symbolically depicted on paper. We refer to these as circuit diagrams. They also show the current's flow direction. In a circuit, electrons enter the circuit from a source and exit the circuit through a process known as earthling. Both alternating current and direct current can flow across the circuit.

Hence, the correct answer is option A.