
Explanation:
Box 1: Yes
RG0 will be created with location from template file.
For subscription level deployments, you must provide a location for the deployment. The location of the deployment is separate from the location of the resources you deploy. The deployment location specifies where to store deployment data.
Box 2: No
Only RG0 and RG3 will be created, RG1 and RG2 already exist and can't be created.
Box 3: No
RG3 will be created in east region.
https://learn.microsoft.com/en-us/azure/azure-resource-manager/templates/deploy-to- subscription?tabs=azure-cli#deployment-location-and-name