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B.) Steel

Sound travels fastest in solids, slower in liquids, slowest in gases and does not travel at all in a vacuum.

The particles in solids (steel) are very close together, so sound is quickly transmitted through vibration.

The answer is Steel, sound waves travel fastest through steel.

Sound wave can be described as a type of disturbance that travels or moves through a medium. It has been proven that wave move at a much faster rate in solid than in any other medium.

From the listed options in the question the only solid substance is steel, hence sound waves moves/travel fastest through steel.

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