Nan attempt to save money, the lunchroom staff sent out student questionnaires to see which foods students preferred. once they knew students preferences, the lunch room staff would prepare the most popular foods, thereby reducing waste. based on the student questionnaire data, what inference can the lunchroom staff make? a) most students bring their lunch from home. b) pizza is the favorite food of about one-third the students. c) all students would prefer to eat pizza over any other food. d) students have no preferences regarding the food they eat for lunch.