Detailed Explanation:
* Rationale for Correct Answer (True):When terraform apply completes successfully, Terraform prints output values. Outputs from both root and child modules are displayed, but child module outputs must be explicitly exposed through the root module outputs to be visible at the CLI.
* Analysis of Incorrect Option:
* False: Incorrect, because Terraform does display output values, but only if they are exposed from child modules to the root module.
* Key Concept:Outputs help you extract important information (e.g., IP addresses, resource IDs) from your configuration.
Reference:Terraform Exam Objective - Read, Generate, and Modify Configurations.

* A Terraformbackenddetermineswhere and how Terraform state is stored.
* Bothterraform applyandterraform destroyinteract with state, so Terraform needs access to the backend for state storage and updates.
* D (Neither are correct)is incorrect becauseTerraform state is required for both apply and destroy operations.
Official Terraform Documentation Reference:
Terraform Backends

The .terraform.lock.hcl file is a new feature in Terraform 0.14 that records the exact versions of each provider used in your configuration. This helps ensure consistent and reproducible behavior across different machines and runs.

This is the best time to run terraform validate, as it will check your code for syntax errors, typos, and missing arguments before you attempt to create a plan. The other options are either incorrect or unnecessary.

When running a terraform apply -refresh-only, Terraform does not reference the configuration files, but only the state file, credentials, and cloud provider. The purpose of this command is to update the state file with the current status of the real resources, without making any changes to them1.