B (terraform init)-Must be run firstto initialize the Terraform working directory, download providers, and configure the backend.
A (terraform apply)- Requires initialization first, so itcannotbe run before terraform init.
C (terraform plan)- Also requires terraform init first to generate a plan.
D (terraform show)- Displays the state,not relevantfor first-time deployment.
Official Terraform Documentation Reference:
terraform init - HashiCorp Documentation

The default "local" Terraform backend stores the state file in a local file named terraform.tfstate, which can be used to track and manage the state of your infrastructure3.

The public Terraform Module Registry automatically exposes all the information about published modules, including required input variables, optional input variables and default values, and outputs. This helps users to understand how to use and configure the modules.

This is what state locking accomplishes, by preventing other users from modifying the state file while a Terraform operation is in progress. This prevents conflicts and data loss.

terraform state listonly displays resources stored in the state filebut doesnot interact with the cloud provideror refresh the state.
terraform plan, terraform apply, and terraform destroycompare or modify the infrastructure, so theyrefresh the stateto ensure accuracy.
Official Terraform Documentation Reference:
terraform state list - HashiCorp Documentation