steel
water
air
vacuum
Answer is Right!
Answer is Wrong!
Sound travels fastest in solids, followed by liquids, and slowest in gases. This is because sound is a wave, and waves travel faster in denser materials. Steel is the densest material of the four options, so sound travels fastest in steel. Water is less dense than steel, so sound travels slower in water. Air is the least dense material of the four options, so sound travels slowest in air.
In a vacuum, there are no particles to carry the sound wave, so sound cannot travel.