Question

A wave is traveling through X. What can be known about X?

It is empty space.
It is any medium.
It is a solid.
It is a liquid.

Answer 1

I think it is B. It is any medium. Because waves usually travel through a medium.

Answer 2

What can be known about X is that  X is a medium of propagation of wave.

Option B is correct

What can be known about X?

Generally, Waves are defined simply as the propagation of disturbances from one place to another through a medium , Examples of waves is: a swell of the hand.

In conclusion, The information we can decipher about X is that it is a medium, because waves can not travel if there is no medium to travel through.

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