Final answer:
The correct answer is c. ROM (Read-Only Memory).
Step-by-step explanation:
The correct answer is c. ROM (Read-Only Memory). ROM is a type of memory used in computers and other electronic devices that stores data permanently and cannot be modified or erased by normal computer operations. Unlike secondary memory devices such as hard disks, floppy disks, and magnetic tapes, which can be written to and read from, ROM is primarily used to store firmware, software instructions, and data that need to be permanently retained.