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The correct response identifies detecting malware as not a primary function of an operating system. Operating systems are essential for managing the hardware components of a computer, providing a platform for running applications, and facilitating user interaction with the system.

Managing hardware resources involves overseeing the CPU, memory, storage, and input/output devices to ensure that software applications can operate efficiently. This is a fundamental role of an operating system.

Providing a user interface is also a critical function as it allows users to interact with the system, whether through a graphical interface or command line.

Managing files and directories is another key responsibility, enabling users to organize, access, and store data effectively within the file system.

While operating systems can incorporate security features, including basic measures against malware, the primary responsibility for detecting and removing malware falls to dedicated security software or antivirus programs rather than the operating system itself.