Which Microsoft tool can be used to manage Windows updates?

The correct choice is the tool specifically designed for managing Windows updates, which is Windows Update. This built-in feature allows users to check for, download, and install updates for the Windows operating system, ensuring that the system has the latest security patches and improvements. Windows Update is essential for maintaining system stability, security, and access to new features.

Windows Task Scheduler is meant for automating tasks and running scripts at specified times or events, not primarily aimed at managing system updates. Windows Defender focuses on providing antivirus protection and security features, rather than specifically managing Windows updates. Device Manager is used to manage hardware devices and drivers on the system, which doesn't include overseeing the process of Windows updating.