The school principal wants to know whether the students in the entire school prefer football or basketball. The principal draws a random sample from the following groups: All school teachers All girls in each grade All students in each grade All students on the basketball team Which of the following groups best represents the population she should take a random sample from to get the best results for her survey? (1 point) a All school teachers b All girls in each grade c All students in each grade d All students on the basketball team