I think it's 900 but I can't be sure.
That answer would be, (B) Search Engines
Answer:
read only memory (ROM)
Explanation:
Examples of non-volatile memory include read-only memory (see ROM), flash memory, most types of magnetic computer storage devices (e.g. hard disks, floppy discs and magnetic tape), optical discs, and early computer storage methods such as paper tape and punched cards.
Deep depending on the document editor, you should be able to just click either the top or bottom margin to edit!
