Respuesta :
I believe the correct answer from the choices listed above is the third option. The bell is seen vibrating but not heard because 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. Hope this answers the question. Have a nice day.
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.
What is a Wave?
This is defined as the propagation of disturbances from place to place in a
regular and organized way.
LIght waves don't require a medium because its speed is constant
however, sound waves require an air medium to vibrate. The vacuum jar
doesn't have air which is why no sound was produced.
Read more about Waves here https://brainly.com/question/6069116