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Cookies are a necessary food item in your life. First, they taste amazing, like sweet nectar that warms your tummy. Second, they come in all kinds of flavors. Even if you are a picky eater, there is surely a type of cookie that will please you. Finally, cookies make you happy. If you decide not to eat cookies, you will be miserable and cranky for the rest of your life. Eat them now!
The author of this story had this purpose.
What is to persuade the reader?