Which statement best describes the role of an operating system?

Which statement best describes the role of an operating system?

• A. An operating system is a web browser.
• B. An operating system is a database management system.
• C. An operating system manages hardware resources, provides a user interface, and runs software; examples include Windows, macOS, and Linux.
• D. An operating system is a text editor.

Answer: (C)

An operating system coordinates how the computer’s hardware resources are used and provides a platform for software to run. It decides which program gets CPU time, manages memory so programs have space to operate, and handles input/output devices through drivers, keeping everything running smoothly and safely. It also offers the user interface you interact with—whether a graphical desktop or command line—and provides essential services like the file system and networking that other programs rely on. Examples such as Windows, macOS, and Linux show this role by presenting a user environment while controlling hardware interactions and enabling a wide range of software to run. A web browser is an application that uses the OS to function; it isn’t responsible for managing hardware resources on its own. A database management system focuses on storing and retrieving data, not coordinating hardware. A text editor is simply another program for editing text.

An operating system coordinates how the computer’s hardware resources are used and provides a platform for software to run. It decides which program gets CPU time, manages memory so programs have space to operate, and handles input/output devices through drivers, keeping everything running smoothly and safely. It also offers the user interface you interact with—whether a graphical desktop or command line—and provides essential services like the file system and networking that other programs rely on. Examples such as Windows, macOS, and Linux show this role by presenting a user environment while controlling hardware interactions and enabling a wide range of software to run.

A web browser is an application that uses the OS to function; it isn’t responsible for managing hardware resources on its own. A database management system focuses on storing and retrieving data, not coordinating hardware. A text editor is simply another program for editing text.