Which statement best describes the difference between sound and light waves?

The distinction highlighted in the correct answer pertains to the nature of sound and light waves. Sound waves are classified as mechanical waves, meaning they require a medium (such as air, water, or solids) to propagate. This characteristic arises because sound is produced by vibrating particles and relies on the interaction of these particles to transmit energy.

On the other hand, light waves are identified as electromagnetic waves. They do not require a medium and can travel through a vacuum, such as outer space. This capability is a fundamental aspect of electromagnetic radiation, allowing light from the Sun to reach Earth despite the vast empty space between them.

Understanding these fundamental differences is crucial in physics as it informs how various phenomena like sound propagation and light transmission behave in different environments, particularly in contexts such as communication technology and astrophysics.