A driver. A driver is basicly and application or component that helps communicate between you computer and a device(a mouse, keyboard, printer etc.) You may have know when you get a new mouse and connect it up, Windows always tries to find a driver and download it.
Explanation:
it will be k because it process faster an it comsume less elecricity
I have concluded the answer is a
<span>B) storing information and documents, pictures</span>