- PROM (Programmable Read-Only Memory) is a type of memory that can only be written once. - EPROM (Erasable Programmable Read-Only Memory) can be erased using ultraviolet light, making it erasable and reprogrammable. - Flash Memory is a type of non-volatile memory that can be electrically erased and rewritten. - ROM (Read-Only Memory) cannot be erased or reprogrammed under normal conditions. Hence, the correct answer is (2).