A beam of light used to record and retrieve data on optical disks is known as

The correct answer is C. laser.

A laser is a beam of light that is produced by a process called stimulated emission. This process occurs when atoms or molecules are excited to a higher energy state by an external source, such as a flash lamp or an electrical discharge. When these atoms or molecules decay back to their ground state, they emit light in a very specific direction and with a very specific wavelength. This light is called laser light.

Laser light is used in a variety of applications, including recording and retrieving data on optical disks. In this