________ are the most commonly used mass storage devices because of their low cost, high speed, and large storage capacity.

A) Magnetic disks
B) Magnetic tapes
C) Optical storage devices
D) RAM sticks

Mass Storage Devices

Devices designed to store large amounts of data for long-term retention; examples include hard drives, solid-state drives, and tape libraries.

Magnetic Disks

Data storage devices that use magnetic storage to record and retrieve digital information using one or more rotating disks.

Optical Storage Devices

A form of secondary storage in which a laser reads the surface of a reflective plastic platter.