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.

I think that he can not show definitively that vitamins cause a person to be taller.

The study does show a relationship between the two, but it's not necessarily one of cause and effect. There could be other factors involved in the experiment.

The kids who received vitamins might have been receiving better nutrition and better care in general opposed to those who did not have any vitamins.

Also, maybe certain ethnic groups are just naturally shorter so they would be shorter with vitamins anyway.

Explanation: I hope this answers the question to some degree.

I'm sorry if it doesn't.

answer; protectionism fosters competition and keeps price regulated;

answer; the president uses mass media to gain support for policies;