The answer is D because of smoking and the smoke fills places and the smoke is dangerous to breathe in. If you are younger than 18 and are using drungs it is against the law to do that. Finnally they increase spread of disease because you could have too much drugs.
<u><em>The proper answer to this question is option D "All of the above".</em></u>
Reason:
<u><em>Drugs can increase pollution by animals getting a hold of it, or people making it, drugs could lead into criminal activity because some drugs effect and kill brain cells which means your loosing your conscious, drugs could cause diseases which could be spread among people. Drugs could be harmed in many ways.</em></u>
So we can create more "specialty" jobs that people are skilled to just one area of the body. If we talked about all the body parts at once we would gather way to much information than we need.
