‘CD’ computer abbreviation usually means ?

The correct answer is: D. Compact Disc

A compact disc (CD) is a small, portable disc that can store digital data. CDs were first developed in the 1970s and became commercially available in the 1980s. CDs are typically used to store music, but they can also be used to store other types of data, such as computer files or video.

The other options are incorrect because:

• A. Command Description is not a common computer abbreviation.
• B. Change Data is not a common computer abbreviation.
• C. Copy Density is not a common computer abbreviation.

I hope this helps!