Shortcut to minimize workbook in Excel:

Keyboard shortcuts are combinations of keys that provide a quicker way to perform common commands in software applications. Knowing these shortcuts can significantly improve efficiency.

• Ctrl + F9 is the correct shortcut in Microsoft Excel to minimize the active workbook window. This action reduces the workbook to a button on the taskbar.
• Ctrl + M is often used for indenting paragraphs in applications like Microsoft Word, not for minimizing workbooks in Excel.
• Alt + F9 is typically used in some applications to toggle between field codes and their results, or for minimizing/restoring windows in other contexts, but not for minimizing an Excel workbook.
• Ctrl + Shift + F9 is used in Word to unlink a field or in Excel to recalculate dependent formulas, not to minimize a workbook.