Answer:
1. Windows 10 Pro, Windows 10 Enterprise, Windows 10 Education.
2. Backup and Restore Center
3. I'm not sure
4. I'm not sure
5. Yes it will ask for it, but you'll have the option to choose to do it later. When you are loaded into Windows, it will automatically detect your computer and activate. The reason for this is that you might be trying to download a new version of Windows such as Pro.