The cafeteria manager at a local middle school would like to survey students to get their opinion on the new lunch menu. Which of the following sampling methods would be most effficient in reducing bias? A. Select one class at random, then survey each student in that class.
B. Obtain an alphabetical list of all students that attend the school, then survey every 10th student.
C. Have each eighth grader complete a survey during homeroom.
D. Randomly survey 10 students in the cafeteria.