Sound travels the fastest in which of the following mediums?

Explanation:

The speed of sound is determined by the medium in which it is transmitted. Sound travels the fastest via solids, then slowly through liquids, and finally slowly through gases.

Steel is solid here, water and kerosene oil are liquids, while air is a gas. As a result, sound travels the fastest through steel.

Final Answer:

Hence, Option (B) is correct i.e. Steel.