Dense solids.
Related Information:
Sound waves travel mechanically, by transferring their energy, molecule by molecule, through a transfer medium. So, the more dense the transfer medium (molecules closer to one another), the faster sound energy is transferred.
Different perspective:
Sound travels by vibrating the particles of the medium through which it travels. So sound travels best in steel as the particles are tightly packed, through wood or water but poorly in air, and not at all in a vacuum.
solid
Sound travels the fastest through non-porous solids.
It travels best through solids
liquids.
Sound waves from a radio typically travel through the air as it is a medium that allows for the propagation of sound waves. Sound waves are generated by the radio transmitter and then travel through the air as vibrations in the form of pressure waves to reach the receiver.
the matter inside is bunched together so sound travels best through a solid.
The best type of material that conducts sound the best would be any solid. Only because of the sound that hit the compacted atoms and it would travel the fastest.
It travels best through solids
No: worst. Sound cannot travel though a vacuum.
Sound travels best in iron because it is a denser material compared to cloth and wood. Denser materials allow sound waves to travel more effectively and with less loss of energy. Water is also a good medium for sound transmission because it is denser than air.
That's because sound is a compression wave. It needs a medium to travel through. The best mediums are dense, like metal and concrete. Liquids are okay. Gasses are the worst. Sound will not travel in space because there's no medium for sound to travel through.
Spongy materials are the most difficult for sound to travel through. Vacuum is the best acoustic insulation but it doesn't really count for the purpose of this question, since it is not a material but a lack of material.