This was done in order for the doctors to be sure that they have the best subject for the experiment. The doctors will have a basis for comparison in order to measure the effects of the procedure after it is done.
<em>Hope this helped! :)</em>
Answer:
The Industrial revolution
They supplied things that were needed and demanded
I believe the answer is: around 60%
Most of college students aware that alcohol consumption might be a very important aspect of the social life in college. But many of them also fully aware that alcohol would became hindrance for their academic pursuit, which is why many students choose to abstain from it.