Which keyboard shortcut is used to close or quit an application?

The keyboard shortcut to close or quit an application is CTRL+W. This combination is commonly used in many software applications to close the currently active window or tab. Understanding this shortcut is crucial for efficiency while navigating software, as it allows users to quickly dismiss items without needing to reach for the mouse or trackpad.

While other shortcuts might perform different functions, such as printing (CTRL+P), canceling an action (ESC), or creating a new document (CTRL+N), they do not specifically serve the purpose of closing an application. Therefore, CTRL+W stands out as the appropriate choice for closing applications effectively.