3. Mr. Losse wants to take suggestions for how to improve detention, so he administers a 4- question survey to the 6 students at LPBS who earned the most demerits that day. Which of the following is most likely to bias the results of the survey? (a) The survey only contained 4 questions (b) The survey was only given on one day (c) The survey was given at the end of the day (d) The survey was only given to the students who earned the most demerits​