Potation means that write a petition for something to somebody request formally and in writing. What is happening in thSid picture is the student have wrote a advice for Cafeteria about they want to make school lunch better and there are some student sigh up on the paper, student is giving the paper to the student government. This picture shows that student has their own right to give school advice. This is important because that student needs to have their own right, if they don't then they won care about the school, so the school won't get better day by day.