The correct answer is C. Minimize.
The minimize button is usually represented by a down-pointing triangle in the upper-right corner of a window. When you click the minimize button, the window shrinks down to a small icon on the taskbar at the bottom of the screen. The window is still open, but it is out of the way so you can focus on other things. To restore the window, click on its icon on the taskbar.
The close button is usually represented by an X in the upper-right corner of a window. When you click the close button, the window closes and all of its data is lost. If you want to save the data in the window, you should save
it before you close the window.The maximize button is usually represented by a square with two arrows pointing to the top right corner of a window. When you click the maximize button, the window expands to fill the entire screen. To restore the window to its previous size, click the restore button, which is usually represented by a square with two arrows pointing to the top left corner of a window.
None of the above is not a valid option.