gcloud compute networks subnets expand-ip-range
NAME
gcloud compute networks subnets expand-ip-range - expand the IP range of a Compute Engine subnetwork

A is correct because this makes sure the VM gets replicated in the new zone.
B is not correct because this takes more steps than A.
C is not correct because this will generate an error, because gcloud cannot copy disks.
D is not correct because the original VM will be moved, not replicated.

A is not correct because you should use "bq", not "gcloud", to estimate the amount of bytes read.
B is correct because this is the correct way to estimate the yearly BigQuery querying costs.
C is not correct because you should use "bq", not "gcloud", to work with BigQuery.
D is not correct because this will not give the amount billed for a query.

The Apache web server is not the only application running in the project, so the budget alert is not suitable because it is related to all applications and not only the network traffic as needed.