Concept:Application software helps users perform specific tasks, while system software manages the computer itself.Explanation:MS-Word is a word processing application used for typing and editing documents.Corel Draw is a graphics design application used for creating illustrations.MacWrite is a word processing application for Apple computers.Linux is an operating system, which is system software that controls hardware and other programs.Since Linux is not designed for a specific user task like word processing or drawing, it is not an application software.Answer:C. Linux