You need to attach a new data disk to an existing Azure Virtual Desktop session host. Which object should you modify?

To attach a new data disk to an existing Azure Virtual Desktop session host, you must modify the specific virtual machine object representing that host. In this scenario, "Host1" directly refers to the session host virtual machine. Data disks are attached at the virtual machine level, not at higher-level Azure Virtual Desktop constructs. "Workspace1" is a logical grouping of application groups and desktop application groups, not a virtual machine. "Pool1" is a host pool, which is a collection of session hosts, but you modify individual hosts within the pool, not the pool itself, to attach a disk. "Default Desktop" refers to the default desktop application group, which defines the published desktop experience, not the underlying virtual machine hardware.