The memory which is ultraviolet light erasable and electrically programmable is

The correct answer is D. EPROM.

• ROM (Read-Only Memory) is a type of non-volatile memory that is used to store permanent data. It is typically used to store the BIOS (Basic Input/Output System) and other system files. ROM is not erasable and can only be programmed once.
• PROM (Programmable Read-Only Memory) is a type of non-volatile memory that can be programmed once. It is typically used to store firmware and other data that needs to be changed infrequently. PROM is erased using ultraviolet light and programmed using a special device called a PROM programmer.
• RAM (Random-Access Memory) is a type of volatile memory that can be read and written to. It is typically used to store data that is currently being used by the computer. RAM is erased when the computer is turned off.
• EPROM (Erasable Programmable Read-Only Memory) is a type of non-volatile memory that can be erased and programmed multiple times. It is typically used to store firmware and other data that needs to be changed frequently. EPROM is erased using ultraviolet light and programmed using a special device called an EPROM programmer.

The answer is D. EPROM because it is the only type of memory that is both ultraviolet light erasable and electrically programmable.