
Explanation
Not allowed resource types (Deny): Prevents a list of resource types from being deployed. This means this policy specifically prevents a list of resource types from being deployed. So that refers that except deployment all the other operations like start/stop or move etc. are not prevented. But to be noted if the resource already exists, it just marks it as non-compliant.
Replicated this scenario in LAB keeping VM running and below are the outcome :
* VM is not deallocated
* Able to stop and start VM successfully.
* Not able to create new virtual network or VM.
* Not able to modify VM size.
* Not able change the address space of the virtual network.
* Successfully moved virtual network and VM in another resource group.
Statement 1 : Yes
Based on above experiment the policy will mark the VNET1 as non-compliant but it can be moved to RG2 .
Hence this statement is true.
Statement 2 : No
Based on above experiment the policy will mark the VM as non-compliant but it will still be running, not deallocated. Hence this statement is False.
Statement 3 : No
Based on above experiment the address space for VNET2 can not be modified. Hence this statement is False.

Reference:
https://docs.microsoft.com/en-us/azure/governance/policy/assign-policy-portal