When using multiple configurations of the same Terraform provider, what meta-argument must you include in...

Rationale for Correct Answer: To configure multiple instances of the same provider (for example, multiple AWS regions/accounts), you define additional provider blocks and set alias on each non-default one:

provider "aws" { region = "us-east-1" } # default

provider "aws" { alias = "west" region="us-west-2" } # non-default

Resources/modules then select it via provider = aws.west (or providers map for modules).

Analysis of Incorrect Options (Distractors):

A (depends_on): Used to force ordering; not for provider configuration identity.

C (name): Not a provider meta-argument for multiple configurations.

D (id): Not a provider configuration meta-argument.

Key Concept: Provider aliasing for multiple provider configurations.