The correct answer is option 3: Sound wave.

Option 1: Light wave. Light waves are a type of electromagnetic wave and are comprised of particles called photons. They can travel through a vacuum and have varying wavelengths and frequencies, which determine the different colors of light.

Option 2: Radio wave. Radio waves are also a type of electromagnetic wave. They have longer wavelengths and lower frequencies than light waves. Radio waves are commonly used for communication, such as in radio and television broadcasts.

Option 3: Sound wave. Sound waves are not electromagnetic waves. They are mechanical waves that require a medium, such as air, water, or solids, to travel through. Sound waves are created by vibrations in matter and are responsible for our sense of hearing. Unlike electromagnetic waves, sound waves cannot travel through a vacuum.

Option 4: Microwave. Microwaves are a type of electromagnetic wave, similar to radio waves but with shorter wavelengths. They are commonly used in microwave ovens for heating food. Microwaves can also be used for communication, such as in satellite technology and cell phones.