The strongest conclusion to a persuasive essay a. restates the thesis so that it is the final thought in the reader's mind. b. revises the thesis based on arguments presented in the essay. c. readdresses the thesis in light of evidence provided in the essay. d. presents at least three final, dramatic pieces of evidence to support the thesis.

In much the same way that the introduction lays out the thesis for the reader, the conclusion of the paper should reiterate the main points—it should never introduce new ideas or things not discussed in the body of the paper!—and bring the argument home. The force with which you express the theme here is especially important, because if you're ever going to convince the reader that your thesis has merit, it will be in the conclusion. In other words, just as lawyers win their cases in the closing argument, this is the point where you'll persuade others to adopt your thesis.
If the theme is clear and makes sense, the conclusion ought to be very easy to write. Simply begin by restating the theme, then review the facts you cited in the body of the paper in support of your ideas—and it's advisable to rehearse them in some detail—and end with a final reiteration of the theme. Try, however, not to repeat the exact language you used elsewhere in the paper, especially the introduction, or it will look like you haven't explored all aspects of the situation.
All in all, remember these are the last words your reader will hear from you before passing judgment on your argument. Make them as focused and forceful as possible.
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