A. Magnetic
B. Volatile
C. Optical Disc
D. None of these

Solution

C. Optical Disc

Explanation

<p><span style="font-size: 14px;">A CD (Compact Disc) is a type of optical memory used for storing data, music, videos, and other digital content. It falls under the category of secondary storage and is classified as non-volatile memory, meaning data remains stored even when the power is turned off.</span></p>