What does the Windows key + D keyboard shortcut do in Microsoft Windows?

The Windows key + D keyboard shortcut is used to show the desktop or toggle back to the previously open windows in Microsoft Windows. It provides a quick way to access desktop icons, files, folders, and shortcuts without closing the applications currently running.

When you press Windows key + D, Windows minimizes or hides open windows to display the desktop. Pressing the same shortcut again typically restores the previous window arrangement, making it useful when switching between desktop items and active applications.

The other options describe different functions. Show System Properties displays information about the computer and its operating system. Find Computers relates to locating computers on a network in certain Windows environments. Lock Desktop is not the function of this shortcut; the standard shortcut for locking a Windows computer is Windows key + L.

It is also useful to distinguish Windows key + D from Windows key + M. Both can minimize or hide open windows to reveal the desktop, but Windows key + D acts as a toggle, while Windows key + M minimizes windows without providing the same toggle behavior.

Therefore, Option C — Show Desktop (toggle) is the correct answer. This shortcut is a common topic in computer fundamentals and operating systems MCQs.