Non-volatile memory is the type of computer memory that can hold the saved data even if the power is off. Few examples of non-volatile memory are EEPROM (Electrically Erasable Programmable Read-Only Memory), ROM, hard disk, floppy disk, etc. Of the given option only EEPROM is a non-volatile memory the rest are volatile memories. Important PointsSRAM (static RAM) is random access memory (RAM) that retains data bits in its memory as long as power is being supplied. Inside a dynamic RAM chip, each memory cell holds one bit of information and is made up of two parts: a transistor and a capacitor. As DRAM has a capacitor, it continuously leaks current. Therefore it requires frequent refresh which consumes power. The volatile memories are those which hold data only for a shorter period of time. Cache and main memory hold it till the power is on and do not retain it afterward. So those are volatile memories.