Window 9 and Window 10 are known as _____?

ونڈو 9 اور ونڈو 10 کو _____ کہا جاتا ہے؟

Type of computer

Utility software

Application software

Operating system

NOTE: There was no version of Microsoft Windows officially launched as "Windows 9." BUT ACCORDING TO THE ASKED QUESTION WE SELECTED OPTION D.

Microsoft skipped Windows 9, going directly from Windows 8.1 to Windows 10.

Windows 9 and Windows 10 are both operating systems.

Specifically, versions of Microsoft Windows.

Windows 10 is the more recent version,

And it is part of the Windows NT family.