Which is true about functional text? Graphs and charts display simple concepts in complex formats. Technical articles may have boldface words or phrases to indicate key ideas. Charts and graphs rarely feature labels or captions. Recipes, letters to the editor, and e-mails are examples of technical articles.

The correct answer is Recipes, letters to the editor, and e-mails are examples of technical articles.

Explanation: Functional text is a piece of writing meant to help the reader achieve an everyday task. They use graphics, different font sizes and other textual features in order to involve the readers and leader them by using instructional information. Good readers use the textual features in functional texts in order to read and understand the information.