What is a recommended method for closing unused applications on an Apple device?

Swiping up on the multitasking view is the recommended method for closing unused applications on an Apple device because it is designed specifically for managing open apps effectively. When users swipe up from the bottom of the screen (or double-click the Home button on older devices), they can see all the applications that are currently running. By swiping each app off the screen, users can close them quickly and easily. This method is user-friendly and allows for efficient multitasking, ensuring better performance and battery management.

The other methods mentioned are not standard practices for closing applications in the Apple ecosystem. Using the command line is typically not applicable for most users when it comes to managing apps on an Apple device. Force quitting through Task Manager is a method associated with other operating systems like Windows, and relaunching the device is not necessary just to close applications; it can be an extreme measure. Therefore, swiping up in the multitasking view remains the most effective and intuitive method for users to manage their applications.