Explanation:

Let's define each term to identify the correct answer: \nOption (A) **Task Bar**: The taskbar is a graphical user interface element that typically runs along one edge of the screen (usually the bottom) and is used to launch and switch between running applications. It displays small representations of open programs, but it is a bar, not a small picture that *depicts* a program, file, or folder in isolation. So, this is incorrect.\nOption (B) **Icon**: An icon is a pictogram or ideogram displayed on a computer screen in order to help the user navigate a computer system or mobile device. It is a small graphical representation of a program, file, folder, or function. This perfectly matches the description in the question. So, this is correct.\nOption (C) **Pixel**: A pixel (short for 'picture element') is the smallest physical point in a raster image or the smallest controllable element of a picture represented on the screen. It is a single dot of color, not a depiction of a program, file, or folder. So, this is incorrect.\nOption (D) **Cursor**: A cursor is a visual indicator on a computer display that shows the current position for user interaction, such as where text will be inserted or where a mouse click will register. It is a pointer, not a depiction of a program, file, or folder. So, this is incorrect. \nTherefore, the correct option is (B).