______ is used in operating system to separate mechanism from policy
<span><span>A. Single level implementation</span><span>B. Two level implementation</span><span>C. Multi level implementation</span><span>D. None</span></span>
The answer is D) pull down menu
Also called a drop-down menu, this is a menu that remains invisible until you click or hover over it, pulling up the menu options. This is useful for reducing clutter in the work area of an application, such as Excel, while keeping the tools included in the menu readily available.
