Question

what is light? a type of sound wave that requires a medium. an electromagnetic wave that carries energy. a form of matter that has a fixed shape. a particle that has mass but no energy.

Explanation:

Light is classified as an electromagnetic wave that propagates through space (and some media) while transferring energy. It does not require a medium (unlike sound waves), is not matter with a fixed shape, and photons (light particles) carry energy and have no rest mass.

Answer:

An electromagnetic wave that carries energy.