Answer: The correct answer is "air, water, steel".
Explanation:
Sound is a longitudinal wave.
The longitudinal wave consists of compression and rarefaction.
Sound wave need a medium to travel. It can travel in solid, gas and liquid.
Denser the medium, more the speed of the sound. The speed of the sound is fastest in solid in comparison to liquid. The speed of the sound is slowest in gas comparison to liquid.
In the given problem, Sound travels through air, steel and water at different speeds. Steel is solid. Air is mixture of the gases. Water is liquid.
The sequence of the speed of the sound that will travel through the slowest to fastest is "air, water, steel".
Therefore, the correct option is A.
