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 best way to specify a tag of v1.0.0 when referencing a module stored in Git is to append ?ref=v1.
0.0 argument to the source path. This tells Terraform to use a specific Git reference, such as a branch, tag, or commit, when fetching the module source code. For example, source = "git::https://example.com/vpc.git?
ref=v1.0.0". This ensures that the module version is consistent and reproducible across different environments. References = [Module Sources], [Module Versions]

It lets you version, reuse, and share infrastructure configuration as code files, which can be stored in a source control system and integrated with your CI/CD pipeline.
It reduces risk of operator error by automating repetitive tasks and ensuring consistency across environments.
IaC does not necessarily provision resources at a lower cost, secure your credentials, or prevent manual modifications to your resources - these depend on other factors such as your cloud provider, your security practices, and your access policies.

The Terraform collection type that should be used to store key/value pairs is map. A map is a collection of values that are accessed by arbitrary labels, called keys. The keys and values can be of any type, but the keys must be unique within a map. For example, var = { key1 = "value1", key2 = "value2" } is a map with two key
/value pairs. Maps are useful for grouping related values together, such as configuration options or metadata. References = [Collection Types], [Map Type Constraints]

Terraform can call modules from various sources including the public Terraform Registry, private registries, local file paths, or version control systems like GitHub.
References:
Terraform Modules