What scope does a VPC network have in Google Cloud, and what scope do its subnets have?

Why this is the answer

A Google Cloud VPC is a global resource: one network holds subnets in every region, and instances in different regions on that network talk over internal addresses with no peering or gateway. Subnets are regional and automatically span every zone in their region, so a subnet is never zonal. The regional-network-with-zonal-subnets arrangement in the second option is the AWS model, and it is the most common carry-over mistake.