Flash memory is:

a) a semiconductor

b) a type of ROM

c) non-volatile

d) all of the above

e) none of the above

d) all of the above.

Explanation:

Flash Memory is a memory storage that is non volatile. It can be erased electrically and reprogrammed since it is a type of ROM (Read Only Memory). It is the least expensive form of semiconductor memory. It offers lower power consumption and can be erased in large blocks.

Hence the answer to this question is option d.