Answer:
A).
Explanation:
I got the answer wrong and it said it was A). so it's A
Answer:
The answer is A. He should use more than two people per group.
Explanation:
He only used two people per group, which can't fully prove his conclusion. He should test the experiment again with much bigger groups like about 50 or more. To add on to that, he only did one trial so he can't already call the experiment off. This gives further evidence of the significance of trials.