Answer:a, observations
Explanation:
They believe that people are changed by their surrounding environment and to see if there are any changes one has to observe their behaviours.
The primary function of sleep is not to restore the body yet to rest and restore the "Brain".
False because they wanted the U.S for native born white Protestants. Hope this helps!
That statement is true.
The research subjects usually required to follow a certain regimen, diet, or even drug consumption in order to gauge the effect that they would have after it'sall done. Sometimes, the effects actually cause several negative characteristics that might make the subjects unable to function as good as they do before the experiment.
