The correct answer is: B. Internal memory
Internal memory is the main memory of a computer, where programs and data are stored while the computer is running. It is also known as primary memory or main storage.
External memory is a secondary storage device that is used to store data and programs that are not currently being used by the computer. It is also known as secondary storage or auxiliary storage.
Input devices are used to enter data into a computer. Examples of input devices include keyboards, mice, and scanners.
Output devices are used to display data from a computer. Examples of output devices include monitors, printers, and speakers.
None of the above options are the correct answer.