Final answer:
Windows Virtual Desktop can support multiple operating systems, including Windows 10, Windows 7, and Windows Server versions, making the statement false.
Step-by-step explanation:
The statement that a Windows Virtual Desktop session host can run Windows 10 only is FALSE. Windows Virtual Desktop, which is now a part of Azure Virtual Desktop, supports multiple operating systems. It can run not just Windows 10, but also Windows 7 and Windows Server (2012 R2 and newer). This variety allows for flexibility in the deployment of virtual desktop solutions that can cater to different application compatibilities and use cases.