Respuesta :

the answer is sound, hope i helped, also may i get brainliest??
facundo3141592

Answer: Sound waves.

Explanation:  Mechanical waves are those that need a medium in order to travel.

Radio, microwaves, and light are electromagnetic waves, and they can even travel in total vacuum, while sound waves need a medium (for example, air) in order to exist. So the correct answer would be sound waves.

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