Question

Which wave must have a medium to travel?

A) light wave
B)compression wave
C) electromagnetic wave
D) ultraviolet wave

*****Urgent****

Answer 1

The answer is A good luck !

Answer 2

Letter B

without a medium, there is nothing to compress, hence, no wave. A fast- medium like a gas (air) is easy to compress and allows waves to move through it easily. a slow medium, like a liquid, is still pretty fast, but not as fast as air.