The correct answer is A. Red Hat Linux.
Red Hat Linux is an operating system, which is a type of system software that is responsible for controlling the hardware and software resources of a computer. Application software, on the other hand, is a type of software that is designed to help users perform specific tasks. Examples of application software include word processors, spreadsheets, and web browsers.
B. Microsoft Office is a suite of productivity software that includes applications such as Word, Excel, PowerPoint, and Outlook. C. Adobe Pagemaker is a desktop publishing application that is used to create and edit documents. D. OpenOffice is a free and open-source office suite that includes applications such as Writer, Calc, Impress, and Draw.
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