Answer:
1. Introduction - In the introduction of an essay, it will "introduce" the reader to what the essay will be about, and will include a thesis statement. There should also be a hook to make the reader want to indulge in the essay. Also, no solid evidence is given here and is more so just giving a very brief overview of what the essay topic will be without spoiling much of anything, just like a movie trailer.
2. Body - The body of a paragraph will contain usually 3 or more paragraphs and include evidence, reasoning, and proof to back up what the claim (what that author is trying to say, which I refereed to this in the introduction just as the "essay topic") of the essay is. These paragraphs are usually the most detailed and have the most evidence, like the whole plot of a movie.
3. Conclusion - The conclusion will sum up the whole essay and kind of re-state the claim/topic without using exact wording from before so it's not repeating. Also, along with the claim/topic, it should summarize the whole thing, but not in detail. Just make it very brief and simple.
I hope this helped!