The correct answer is: A. Taskbar
The taskbar is a horizontal bar at the bottom of the screen that contains the Start button, program icons, and the clock.
The status bar is a bar at the bottom of a window that displays information about the window, such as the current file name or the number of pages in a document.
The system tray is a small area in the notification area at the right side of the taskbar that contains icons for running programs and system services.
The launch pad is a dock-like bar at the bottom of the screen on macOS that contains icons for frequently used applications.