In the context of computing software, which of the following is not an operating system?

Correct option is D

Microsoft Office is not an operating system; it is a productivity software suite that includes applications like Word, Excel, and PowerPoint. On the other hand, Android, iOS, and Windows are all operating systems that manage hardware and software resources for devices.
Important Key Points:
1. Operating System: Software that acts as an interface between hardware and applications, managing system resources. Examples include Android, iOS, and Windows.
2. Microsoft Office: A set of application programs designed for tasks like document creation, spreadsheet management, and presentations.
Knowledge Booster:
· Examples of Operating Systems:
· Android: Developed by Google for mobile devices.
· iOS: Developed by Apple for its devices like iPhones and iPads.
· Windows: Developed by Microsoft for personal computers.
· Microsoft Office Features:
· Not related to system management but provides tools for productivity tasks.
· Requires an operating system (e.g., Windows or macOS) to function.
· Other Non-Operating Systems: Applications like Adobe Photoshop, VLC Media Player, and web browsers are not operating systems but require an OS to run.