The correct answer is C. Unix.
Quartz, Window, and X11 are all graphic device information. Quartz is a 2D graphics layer built into macOS. Window is a graphical user interface (GUI) toolkit developed by Apple Inc. X11 is a network protocol and software system for handling input and output for a graphical user interface (GUI). Unix is an operating system that was originally developed at AT&T’s Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.
Unix is not a graphic device information. It is an operating system that was originally developed at AT&T’s Bell Labs research center by Ken Thompson, Dennis Ritchie, and others. Unix is a multi-user, multitasking operating system that is widely used on servers and workstations. It is also used as a platform for many different applications, including web servers, email servers, and database servers.
Quartz, Window, and X11 are all graphic device information. Quartz is a 2D graphics layer built into macOS. Window is a graphical user interface (GUI) toolkit developed by Apple Inc. X11 is a network protocol and software system for handling input and output for a graphical user interface (GUI).