The correct answer is Ctrl + Z.Pressing Ctrl+Z in Microsoft Word and other Word Processor programs can undo any changes made in the document.Ctrl+Z is the keyboard shortcut when using the MS-DOS copy con command which completes the file creation and saves the file to the computer.Pressing Ctrl+Z would erase any changes made in the spreadsheet in Microsoft Excel and other spreadsheet programs.In all major browsers on the Internet (e.g., Chrome, Edge, Firefox, Opera) pressing Ctrl+Z can remove any changes in a file type.Additional InformationKEYACTIVITYCtrl+PUsed to print a document or page.Ctrl+OLaunch the Open dialog boxCtrl+SSave the active workbookCtrl+CCopy to the clipboardCtrl+XUsed to paste text or other objects from the clipboardCtrl+BToggles Bold on or off