Which component is used to read and write optical discs?

Correct answer: Optical disc drive

The governing concept is removable optical storage. An optical disc drive uses a laser to read data from discs such as CDs and DVDs and, when it supports recording, to write data on writable discs. Thus, option D is correct. A scanner digitizes paper material, a speaker produces audio, and a modem converts communication signals; none of them reads or writes optical discs.