Oracle is NOT correct.Among the options, only Oracle is NOT an operating system.Oracle Corporation is an American multinational software company headquartered in Austin, Texas.It was the second-largest software company in the world by revenue and market capitalization.An operating system (OS) is software that manages computer hardware and software resources while also providing common functions for computer programmes.Time-sharing operating systems plan tasks to make the most of the system's resources.They may also contain accounting software for cost allocation of processor time, storage, printing, and other resources.Additional InformationExamples of Operating systems are:Apple macOS.Microsoft Windows.Google's Android OS.Linux Operating System.Apple iOS.Ubuntu.DOS.