Exhibit:variable "sizes" {type = list(string)description = "Valid server sizes"default = ["small", "medium", "large"]}A variable declaration...

Rationale for Correct Answer: Terraform lists are zero-indexed. Given ["small", "medium", "large"], index 0 is small, index 1 is medium, and index 2 is large. Therefore, medium is var.sizes[1].

Analysis of Incorrect Options (Distractors):

A: Index 0 returns small, not medium.

C: Index 2 returns large, not medium.

D: Index 3 is out of range for a 3-element list.

Key Concept: Accessing list elements with zero-based indexing in Terraform expressions.