What term refers to how the author organizes his or her writing?

The correct term that refers to how the author organizes their writing is "text structure." Text structure encompasses the way in which information is arranged and presented within a piece of writing. This can include the arrangement of paragraphs, sections, and overall flow of ideas, which helps convey the intended message to the reader effectively.

Understanding text structure is vital as it allows readers to follow the author's thoughts, identify key points, and grasp the overall message more easily. Various structures might include chronological order, cause and effect, problem and solution, or compare and contrast, among others. Each structure serves a unique purpose in enhancing comprehension and engagement with the text.