Answer :
Final answer:
Brian should use a buzzer to replace the device that converts electric energy into sound energy in the alarm clock.
Explanation:
The device that Brian should use to convert electric energy into sound energy is the buzzer.
A buzzer is an electronic device that produces a continuous or intermittent buzzing or beeping sound. When an electric current passes through the buzzer, it causes a small electromagnet to vibrate rapidly, which produces the sound waves that we hear as sound. This makes the buzzer a suitable choice for replacing the device in the alarm clock that converts electric energy into sound energy.
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