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The correct answer is electromagnetic. Lights travel as an electromagnetic wave. In fact, light is an electromagnetic radiation which has a center of the electromagnetic spectrum. Light is visible to the naked eye, and is responsible for an organism's sense of sight.

Answer: The correct answer is "electromagnetic wave".

Explanation:

Electromagnetic waves: These waves are produced by vibration of the charged particles. But the mechanical waves are caused by wave amplitude.

Electromagnetic wave does not need a medium while the mechanical wave needs a medium to travel.

The electromagnetic wave travels with the speed of the light. The example of electromagnetic wave is light.

Mechanical waves are of two types: Longitudinal wave and Transverse.

Sound wave is a longitudinal wave. It consists of compression and rarefaction.

Therefore, Light travels as an electromagnetic wave.

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