You could recap your introduction paragraph
Which is when u write the same thing in the conclusion as u wrote in the introduction
Answer:
well I hope it's okay unless they're mean
My answer to the question is
controlling idea=purpose × subject × point of view.
If you think of the topic of a selection as a subject then the controlling (main or central) idea of that selection is the most important thing said about the topic/subject.The controlling idea may reveal the writer's opinion,point of view or attitude towards the subject of the paragraph.