The primary memory of a personal computer consists of:

ROM only
RAM only
Both ROM and RAM
Memory module E. None of the above

The correct answer is: C. Both ROM and RAM.

ROM (Read-Only Memory) is a type of memory that is used to store permanent data. This data can be read from the memory, but it cannot be changed. ROM is used to store the basic instructions that the computer needs to start up and run.

RAM (Random-Access Memory) is a type of memory that is used to store temporary data. This data can be read from and written to the memory. RAM is used to store the data that the computer is currently working on.

Both ROM and RAM are important parts of the computer’s primary memory. ROM stores the basic instructions that the computer needs to start up and run, while RAM stores the data that the computer is currently working on.

A. ROM only is incorrect because RAM is also a part of the computer’s primary memory.

B. RAM only is incorrect because ROM is also a part of the computer’s primary memory.

D. Memory module is incorrect because a memory module is a physical device that contains RAM.

E. None of the above is incorrect because both ROM and RAM are parts of the computer’s primary memory.