Answer:
C. Light does not need a medium to travel through, but since sound waves must have a medium to vibrate, sound is not created where no air is present.
Explanation:
The reason the bell is seen to vibrate but not heard is that unlike light, which does not require a medium to pass through, sound waves require an air-filled space in order to vibrate. Option C is correct.
A sound wave is produced when a medium begins to vibrate. When an entity vibrates, a pressure wave is formed, which causes sound.
Light does not need a medium to travel through, but since sound waves must have a medium to vibrate, the sound is not created where no air is present best describes why the bell is seen vibrating but not heard.
The complete question is attached.
Hence option C is correct.
To learn more about the sound wave, refer to
https://brainly.com/question/11797560
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