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Sound waves cannot travel in a vacuum because A) there is no medium for the sound waves to travel through. B) sound waves move too slowly through space without pressure. C) sound waves move too quickly through space without pressure. D) vacuums contain too many air particles for sound waves to move.

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TheArkhamKnight
The aswer is A. Hope I helped! :D 

Answer:

A) there is no medium for the sound waves to travel through.

Explanation:

Sound is a mechanical wave. It requires medium to transfer energy. It moves forward by changing the pressure of the particles that form the medium i.e. by compression and rarefaction.

Now in vacuum, since there is no medium-it is empty, so the sound waves cannot travel and transfer energy. The correct option is A.