Q1. Which of the following is the Open command in MS Office?
Explanation
Ctrl + O is the standard keyboard shortcut for the Open command in MS Office applications such as Word, Excel and PowerPoint. It brings up the file-opening interface for selecting an existing document, workbook or presentation. Tab + O is not the Open shortcut; Tab mainly moves focus between controls. Alt + O usually relates to menu access in older interfaces or ribbon key tips, not the direct Open command. Shift + O only types a capital letter when used with a keyboard and does not open files.
