I think the answer is B) Reformation.
not sure
Hope this helps!
Answer:
Control
Explanation:
Professor Eatwell is trying to study the effects of zinc supplements on young adults' susceptibility to the cold virus. In order to study the effect of zinc supplements it must be made sure that the effects observed during the study is the effect of the zinc supplement solely.
In order for this to happen a control group is used where the group is not given zinc supplements even though the group members think that they are receiving zinc supplements.
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The constitution was created so no one has too much power
