Which of these operations would not close MS word application?

Selecting the close option from the file menu drop-down dialogue box would not close the MS Word application. When a user selects the close option from the file menu drop-down dialogue box, it only closes the current document that is open in the application but leaves the MS Word application itself still running in the background. On the other hand, pressing the Alt + F4 keys or clicking the X button on the title bar or choosing exit from the file menu drop-down box, all of these options close both the current document and the MS Word application itself.