Final answer:
To print in GFEBS using standard Windows functionality, press Ctrl + P to open the print dialog and send the current screen to the printer.
Step-by-step explanation:
To print an on-screen image in GFEBS or any other program using standard Windows functionality, the correct shortcut is Ctrl + P. Pressing Ctrl + P will open the print dialog, allowing you to send the current screen or document to the printer. The other shortcuts mentioned serve different purposes: Ctrl + S is typically used to save a document, Ctrl + C is used to copy the selected item to the clipboard, and Ctrl + V is used to paste the content from the clipboard.