The answer is D: All of these.
An Icon, in computing, is an ideogram that is displayed on a computer desktop. It helps a user navigate around a computer system. It can be understood and be represented by a software tool, a data file or a function. Obviously, within a folder is a data file and thus, all the choices above apply. In addition, an icon on a computer screen can serve as a hyperlink or a file shortcut to access the program or data
