What permits control of the electrical device and interrupts the current delivered to the load?

The choice relating to the switch is accurate because a switch is a device specifically designed to control the flow of electric current in a circuit. When the switch is in the "on" position, it allows current to pass through to the load, enabling the device to operate. Conversely, when the switch is turned "off," it interrupts the current flow, effectively stopping the power supplied to the load. This fundamental function of enabling and interrupting current makes the switch essential for controlling electrical devices safely and conveniently.

The other choices do not serve the same purpose in terms of controlling current flow. A resistor is used to limit current or divide voltage, but it does not act as a control mechanism for turning a circuit on or off. A capacitor stores electrical energy temporarily and can affect current flow and voltage levels, but it does not provide a means to interrupt current like a switch does. A transformer is used to change the voltage level of alternating current (AC) and does not directly control or interrupt the flow of current in the circuit.