Multiple choice technology operating systems Minimize a workbook window to an icon. CTRL + F10 CTRL + F8 CTRL + F CTRL + F9 Reveal answer Fill a bubble to check yourself D Correct answer Explanation CTRL+F9 minimizes or restores the workbook window. Option D is correct. Options A and C are for other functions (F10 is for menu bar, F is for Find). Option B is not a standard Excel shortcut.