Which of the following is a popular operating system for personal computers?

Microsoft Windows is a widely recognized operating system for personal computers due to its user-friendly interface and extensive software compatibility. It has been a dominant player in the PC market for decades, offering various versions tailored to meet the needs of different users, ranging from home users to businesses. Windows provides a vast ecosystem of applications and support, making it accessible and versatile for everyday computing tasks.

While Linux is also a popular choice, especially among developers and those who prefer open-source software, it does not have the same level of mainstream market penetration for casual personal use. Android and iOS are operating systems primarily designed for mobile devices such as smartphones and tablets, which makes them less relevant in the context of personal computers. This reinforces the distinction of Microsoft Windows as the leading operating system specifically for PCs.