Correct Answer:
D. Microsoft
The correct answer is Microsoft. Microsoft Windows is an operating system developed and marketed by Microsoft Corporation, founded by Bill Gates and Paul Allen. It is the most widely used operating system for personal computers in the world.
Understanding the Options
- Apple: Apple develops its own operating system called macOS for its Mac computers, not Microsoft Windows.
- Sun: Sun Microsystems (now part of Oracle) developed the Solaris operating system, not Windows.
- Dell: Dell is a hardware manufacturer that produces computers, but it does not develop operating systems; it typically pre‑installs Windows on its devices.
- Microsoft: Correct; Microsoft is the developer and owner of the Windows operating system.
Therefore, the correct answer is "Microsoft".