Answer:
An optical disc.
Explanation:
An optical disc is a small and flat digital-optical disc that is usually circular and used to store computer data by using a laser beam.
The optical disc is able to store digital data because it is made up of a polycarbonate (a tough-brittle plastic) with one (1) or more metal layers.
Additionally, the data stored in an optical disc cannot be scrambled by a magnet because it isn't made of a magnet or doesn't have a magnetic field. There are different types of optical disc and these are; CD-ROM, CD-R, CD-RW, DVD-RAM, DVD-ROM, DVD+/-RW, BD-RE, DVD+/-R, BD-R, BD-ROM.
Where; CD is an acronym for compact disc.
DVD is an acronym for digital video disc.
BD is an acronym for Blu-ray disc.
R represents read only.
RW represents read and write.
RE represents read, write and erasable.
Hence, an optical disc is a type of media that can be pre-recorded (read only), recordable (write once), or re-recordable (read and write multiple times).
