Premise: The number (of hospital emergency room visits by
heroin users) grew more than 25 percent during the 1980s.
Conclusion:Clearly, then, the
use of heroin rose in that decade.
Which one of the following, if true, would account for the statistic above without supporting the author’s conclusion?
Prethink: Looking for weakening the conclusion without hurting the premise. i.e. Use of heroin is not increased Because
increse in no. of visits For Different reason.(A) Widespread use of automatic weapons in the drug trade during the 1980s raised the incidence of physical injury to heroin users.
Correct , in line with prethinking(B) The introduction of a smokable type of heroin during the 1980s removed the need for heroin to be injected intravenously and thus reduced the user’s risk of infection.
. Irrelevant(C) Many hospital emergency rooms were barely able to accommodate the dramatic increase in the number of medical emergencies related to drug abuse during the 1980s
. Irrelevant(D) Heroin use increased much more than is reflected in the rate of heroin-linked hospital emergency room visits.
Supports the conclusion (E) Viral and bacterial infections, malnourishment, and overdose account for most hospital emergency room visits
linked to heroin. Supports the conclusion