Jorge is conducting an comparative experiment where he is comparing the heights of adults who grew up taking a certain
vitamin and adults who did not. He finds that those who took vitamins are, on average, 2 cm taller. What is a major limitation of
his experiment?
Large amounts of information can be gathered.
It is repeatable.
He can not show definitively that vitamins cause a person to be taller.
No relationship can be shown between vitamins and height.