Final answer:
The correct keyboard shortcut is Ctrl + X to launch a full-fledged editor to edit a command.
Step-by-step explanation:
The correct keyboard shortcut to launch a full-fledged editor to edit a command is Ctrl + X.
This shortcut is commonly used in command-line interfaces and text editors to cut text or delete lines of code. By pressing Ctrl + X, you can launch an editor that allows you to modify the command or edit the text before executing it.
For example, if you're using a command prompt, pressing Ctrl + X will open the command in a text editor like Notepad, where you can make changes and save the modified command.