C. Press Alt-Tab together to switch between applications.
D. Press Ctrl-Alt-Tab to see all open applications.
C. Press Alt-Tab allows users to quickly cycle through all open application windows, making it the quickest method to switch between them. D. Press Ctrl-Alt-Tab brings up a view of all open applications, allowing you to choose the one you want to switch to. A. Minimize all applications is not efficient because it requires manually minimizing everything, then searching for the application on the taskbar. B. Clicking the show desktop icon simply minimizes all windows but doesn’t provide a fast way to switch between applications.