Which feature provides quick access to applications in Windows and makes it easy to switch between tasks?

The taskbar is a critical feature in the Windows operating system that provides users with a streamlined way to access applications and switch between them efficiently. It is typically located at the bottom of the screen and contains the Start button, quick launch icons, and system tray notifications.

The taskbar serves multiple purposes: it allows users to pin frequently used applications for easy access, shows which applications are currently open, and facilitates task switching by displaying thumbnails or icons of these applications. This functionality enhances productivity, as users can quickly move between tasks without having to navigate through menus or desktop icons.

In contrast, the desktop serves primarily as a workspace where shortcuts and files can be organized, while the Start menu is used to access applications and system settings. The startup menu is focused on initial application launches after the system boots up, which does not provide the same level of quick task management offered by the taskbar. Therefore, the taskbar is specifically designed to enhance multitasking capabilities and streamline access to applications.