Answer:
A). A Personal computer.
Step-by-step explanation:
According to the document, 'a personal computer' is the gadget that one requires to convert a CD into MP3. This conversion assists to transfer the data present in the CD's in the form of digital audio files in MP3 format and avoid hoarding discs. One can do this by clicking on 'insert music CD' option in windows media player followed by the choosing 'rip MP3 format' in Tools menu option. Thus, option A i.e. 'a computer' is the correct answer as this what an individual requires to convert a CD into MP3 file.