Question

Which is an optical disk?

Answer 1

In computing and optical disc recording technologies, an optical disc is a flat, usually circular disc which encodes binary data in the form of pits and lands on a special material on one of its flat surfaces.

Answer 2

An optical disk drive (ODD) uses a laser light to read data from or write data to an optical disc.
These include CDs, DVDs, and Blu-ray discs.
This allows you to play music or watch movies using pre-recorded discs.