What do you call the part of a CD-ROM drive’s head assembly that moves across the disk to read
it?

A.
Read/Write Actuator.

B.
The Mechanical Frame.

C.
The Head Actuator.

D.
The Disk Spindle.

Explanation:
The head actuator is the device that physically positions the read/write heads over the correct
track on the surface of the disk. It is called the same for CD-ROMs, hard drives and floppy disks.