What is the author’s purpose in the above passage, and how does she achieve it through her organization and choice of details?

It's to know your purpose before you read something because a purpose can:

Andy bernard laughed at my joke, spitting out his water. complete thought incomplete thought

Your school has recently decided to start serving genetically modified food as part of school lunches. give a multimedia presentation to the student council arguing for or against the new policy. include engaging visual elements and strong evidence that support your position.