Answer:
Once you have decided on your topic and your main controlling idea, you need to choose the two, three, or four supporting points about the topic. The topic is what the paragraph or essay is about, the supporting points are the most important things you have to say about your topic. You will have generated the supporting points in your pre-writing activities. The main points should be important, distinct, and relevant.
Important
Each main point should be worth reading and writing about.