Short Cut Command Key

Explanation
To switch between open programs, you must use the ALT+TAB key combination. This combination allows you to cycle through the open windows or applications on your computer. By holding down the ALT key and then pressing the TAB key, you can easily switch between different programs without having to minimize or close them individually. This shortcut is commonly used to quickly navigate between multiple open windows and increase productivity.

Explanation
Pressing ALT+F4 on a keyboard combination closes the current window. This keyboard shortcut is commonly used to quickly close an active window or application. It is a convenient way to exit out of a program without having to navigate through menus or use the mouse.

Explanation
CTRL+X is a keyboard shortcut that is commonly used to cut selected text or objects. This means that when you press CTRL+X, the selected content is removed from its original location and stored in the clipboard. Therefore, the correct answer for this question is "cut".

Explanation
To bold the document, the correct keyboard shortcut is CTRL+B. This combination of keys activates the bold formatting option in most text editing software or word processors.

Explanation
SHIFT+DELETE is the correct answer because it permanently deletes an item without sending it to the Recycle Bin. When we use SHIFT+DELETE, the item bypasses the Recycle Bin and is immediately removed from the system. This action cannot be undone, so it is important to be cautious when using SHIFT+DELETE to avoid accidental deletion of important files.

Explanation
CTRL+Z is a keyboard shortcut that is commonly used to undo the previous action or command. It allows users to reverse their most recent action and restore the previous state of a document or file. This can be useful when making mistakes or wanting to revert back to a previous version without having to manually redo all the steps. Therefore, the correct answer for this question is "undo command".

Explanation
To rename an object, you can use the function key F2. This key is commonly used in various software applications to enable users to quickly rename files, folders, or objects by selecting the item and pressing F2 on the keyboard. It provides a convenient and efficient way to rename objects without needing to navigate through menus or right-click options.

Explanation
The correct answer is CTRL+A. This keyboard shortcut is used to select all the items in the current window.

Explanation
The Save as command is the same as pressing the F12 key.

Explanation
The correct answer is CTRL + O because it is a commonly used keyboard shortcut to open a file. The combination of the CTRL key and the letter O is intuitive and easy to remember for users. It is a standard shortcut in many software applications and operating systems, allowing users to quickly access the file open function without having to navigate through menus or use a mouse.