Which of the following command is used to switch between the window programs?

The correct answer is A. Alt + Tab.

Alt + Tab is a keyboard shortcut that allows you to switch between open windows on your computer. To use it, hold down the Alt key and then press the Tab key repeatedly. Each time you press Tab, a different window will be highlighted. When you reach the window you want to switch to, release the Alt key.

Alt + Tab is a quick and easy way to switch between multiple windows. It can be especially helpful if you have a lot of windows open and you need to quickly switch to a different one.

Here is a brief explanation of each option:

• A. Alt + Tab: This is the correct answer. Alt + Tab allows you to switch between open windows on your computer.
• B. Alt + F4: This closes the active window.
• C. Ctrl + Tab: This switches between tabs in a single window.
• D. None of the above: This is the incorrect answer.