The correct answer is D. Control memory.
Control memory is a type of memory that stores the microprograms that control the operation of a computer. Microprograms are a sequence of instructions that are executed by the control unit of the computer. The control unit uses the microprograms to control the flow of data and instructions through the computer.
Core memory is a type of memory that was used in early computers. It is a type of magnetic memory that stores data in the form of tiny magnetic domains. Core memory is no longer used in modern computers, but it is still used in some specialized applications.
ROM is a type of memory that is used to store permanent data. It is a type of non-volatile memory, which means that it retains its data even when the power is turned off. ROM is used to store the BIOS, which is the basic input/output system of a computer.
RAM is a type of memory that is used to store temporary data. It is a type of volatile memory, which means that it loses its data when the power is turned off. RAM is used to store the operating system, applications, and data that are currently being used by the computer.
E is not the correct answer because it is not a type of memory.