Comprehensive and Detailed in-Depth Explanation:The terraform state rm commandremovesa resource from Terraform's state file butdoes not destroythe resource in the actual infrastructure. It only removes Terraform's knowledge of the resource, meaning Terraform will no longer manage it.
* If you run terraform state rm on a resource, Terraform will forget that the resource exists.
* However, the resource will still exist in the cloud or infrastructure provider.
* If you later run terraform apply, Terraform may try torecreatethe resource because it is no longer present in its state file.
Official Terraform Documentation Reference:terraform state rm - HashiCorp Documentation

The terraform apply command changes both the cloud infrastructure and the state file after you approve the execution plan. The command creates, updates, or destroys the infrastructure resources to match the configuration. It also updates the state file to reflect the new state of the infrastructure. The .terraform directory, the execution plan, and the Terraform code are not changed by the terraform apply command.
References = Command: apply and Purpose of Terraform State

The "version" attribute is optional when referencing a module from the Terraform Registry. If not specified, the latest version will be used, but it is often recommended to specify a version to ensure consistency across environments.
Reference:
Terraform Module Versioning

In Terraform, when you use the count meta-argument, you can reference individual instances using an index.
The indexing starts at 0, so to reference the "name" value of the second instance, you would use aws_instance.
web[1].name. This syntax allows you to access the properties of specific instances in a list generated by the count argument.
References:
* Terraform documentation on count and accessing resource instances: Terraform Count

Explanation
This is the command that you would use to access all of the attributes and details of a resource managed by Terraform, by providing the resource address as an argument. For example, terraform state show
'aws_instance.example' will show you all the information about the AWS instance named example.