One main advantage of CD-ROMs is that..
a. CD-ROMs can hold a lot of information.
b. users can save files to CD-ROMs.
c. the information on CD-ROMs can easily be manipulated.
d. CD-ROMs can store much more information than DVDs.
The data on CD-ROMs cannot be manipulated, which eliminates answers B and C. CD-ROMs can only store up to 700MB, while DVDs can hold up to 4.7GB on a single layer, eliminating answer D. This leaves only answer A.
