Final answer:
Expository writing commonly uses categories such as comparison, illustration, cause, process, and classification to clarify and explain topics effectively. These categories help organize the essay into a coherent structure with an introduction, body, and conclusion.
Step-by-step explanation:
The subject being addressed in the question is the different categories that most expository writing falls into. Expository essays aim to explain or clarify a topic, often breaking it down into components or categories that make the information easier to understand and organize. The categories include comparison (identifying similarities and differences between two things), illustration (providing examples to support or explain a topic), cause (explaining reasons or causes for certain events or actions), process (describing the steps in a procedure or how something works), and classification (grouping elements based on shared characteristics).
Writers may incorporate these categories into their writing to develop a clear and effective expository essay, which includes an introductory paragraph introducing the topic and categories, body paragraphs explaining each category, and a concluding paragraph summarizing the main points.