Final answer:
App protection policies in Microsoft Intune can be applied to all devices enrolled in Intune.
Step-by-step explanation:
The correct answer is c. All devices enrolled in Microsoft Intune. App protection policies in Microsoft Intune allow you to manage and apply specific security policies to apps that are installed on devices enrolled in Intune. This means that as long as a device is enrolled in Intune, you can manage the app on that device, regardless of whether it is Device1 or any other Windows 10 device enrolled in Intune.