The correct answer is (c) ROM.
ROM stands for Read-Only Memory. It is a type of memory that stores data permanently, even when the computer is turned off. The data stored in ROM is used to start the computer and to perform basic operations.
The motherboard is the main circuit board in a computer. It contains the CPU, RAM, and other important components. The motherboard does not store any data permanently.
RAM stands for Random Access Memory. It is a type of memory that stores data temporarily while the computer is turned on. The data stored in RAM is lost when the computer is turned off.
The hard disk is a storage device that stores data permanently. It is not used to start the computer or to perform basic operations.