Final answer:
According to the Electron Current Flow Theory, electrons flow away from the negative terminal of the source, through the circuit load, toward the positive terminal of the source.
Step-by-step explanation:
The statement is true according to the Electron Current Flow Theory. In metallic wires and resistors, electrons contribute the most to current and flow in the opposite direction of positive current flow. Therefore, electrons flow away from the negative terminal of the source, through the circuit load, and toward the positive terminal of the source.