You wish to make a call via Sound Powered Phone and you have just turned the crank, what do you do now?

Correct Answer: Option C — Press the button on the handset to talk and continue holding down to hear a response

Sound-powered phones operate on electromagnetic induction. After cranking to generate the signal, the handset button must be held down to complete the circuit for transmission and reception. This ensures the user can communicate effectively without external power, a critical requirement for emergency communications during a total ship power failure.