The main reason why a person would set up this business as a benefit corporation is to help school children.
This refers to the buying and selling of goods or services with the main aim of making a profit.
Hence, we can see that based on the given scenario, there is the business of selling mittens and hats and also giving out a number for free to students, and the main reason why a person would set up this business as a benefit corporation is to help school children.
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