If switches W, X, Y, and Z are closed suddenly, what will occur?

When switches W, X, Y, and Z are all closed simultaneously, the circuit completes a path for both the lamp and the motor, assuming that these components are connected in such a manner that both are powered by the same circuit.

If the motor is designed to operate when a specific voltage is applied and, when closed, the switches allow current to flow through both the lamp and the motor, then the lamp will light due to the flow of current, and the motor will rotate as it receives the voltage necessary for operation.

In this scenario, the simultaneous closing of the switches creates a conductive path, thereby activating both the lamp and the motor. This means that both devices will respond positively to the supplied electrical power, leading to a functioning lamp and a rotating motor, which corresponds to the indicated choice.