You want to find out which sport the students at your school like the best. You go to the first football game and stop every 5th student entering the main gate and ask which sport is his or her favorite. Is this a representative sample of the students at your school? A
yes, because you are asking a variety of students

B
no, because you would need to ask every person who goes to the football game, not just every 5th

C
no, because the sample is biased—it only includes students who go to football games

D
yes, because every 5th person makes it random