Respuesta :
(D. travel through a vacuum.) All waves need a medium to wave. In a vacuum there is no medium to wave.
The correct choice would be
D) travel through a vacuum.
Electromagnetic waves are transverse in nature and do not require a medium to travel from one point to another. On the other hand, sound waves are longitudinal waves and require a medium to travel from one point to another. hence sound waves can not travel through vacuum but electromagnetic waves can.