Food policy is like a bunch of rules that grown-ups make to make sure we have enough healthy food to eat. It's kind of like when your mom tells you that you can't eat cookies for breakfast, but instead have to eat something like oatmeal or eggs because they are better for you.
Food policy helps to decide things like what foods can be sold in stores, how food is produced on farms, and how food is transported to stores. It is also used to make sure that everyone has access to healthy foods, no matter where they live or how much money they have.
Sometimes there are arguments about food policy because some people want to eat different things or they want to grow their food differently. But, food policy is important because it helps keep us all healthy and it helps make sure we have enough food to eat.