16 Correct Answer: E
Reference:
https://www.terraform.io/docs/registry/modules/publish.html

17 Correct Answer: A
Output values are like function return values.
Reference:
https://www.terraform.io/docs/language/values/locals.html
https://www.terraform.io/docs/language/values/outputs.html

18 Correct Answer: B
Reference:
https://blog.gruntwork.io/a-comprehensive-guide-to-managing-secrets-in-your-terraform-code-1d586955ace1

19 Correct Answer: D
Reference:
https://www.terraform.io/docs/language/functions/chomp.html

20 Correct Answer: BD
The terraform import command is used to import existing infrastructure.
Import existing Google Cloud resources into Terraform with Terraformer.
Reference:
https://www.terraform.io/docs/cli/import/usage.html
https://cloud.google.com/docs/terraform