Which of the following is NOT an organizational text structure listed for expository texts?

• A. Description
• B. Chronological Order
• C. Problem and Solution
• D. Letter Format

Answer: (D)

Expository texts organize information in specific patterns to help readers understand the topic clearly. Patterns like Description describe features or characteristics of a topic; Chronological Order puts events in the order they happened; and Problem and Solution presents a problem and then explains possible fixes or outcomes. Letter Format isn’t about organizing ideas; it’s a way of arranging a piece of writing as a letter—with a greeting, body, and closing. So while a letter can convey information, it doesn’t provide a general pattern for how to organize expository content. That’s why the option named Letter Format isn’t considered an organizational text structure for expository texts.