This is an inference question, because we are given a series of premises and then asked to draw a conclusion.
Antoine: The alarming fact is that among children aged 19 years and younger, the number taking anti-psychotic medicines soared 73 percent in the last four years. That is greater than the increase in the number of adults taking anti-psychotic medicines during the same period.
Lucy: But the use of anti-psychotic drugs by adults is considered normal at the current rate of 11 adults per 1,000 taking the drugs. In contrast, the number of children on anti-psychotic medication last year was 6.6 per 1,000 children.
Lucy's argument is structured to lead to which of the following as a conclusion?
A) The current level of anti-psychotic drug use among children is extremely high
Lucy if anything is implying the opposite, by indicating that the current level of children utilizing the drugs is far less than the normal adult levelB) The fact that number of children taking anti-psychotic drugs increased 73% over the last 4 years is not an indication that the current level of use is abnormally high
This nails it and is thus correct. Lucy is pointing out in response to Antoine's concern about the increase in drug use by children that just because it has increased by a high percentage does not mean that the absolute number is currently high. Be careful with absolute number vs. percent data. If you start with a small number and then increase it by a large percentage, you may still have a relatively small number.C) If only 6.6 of every 1000 children are taking an anti psychotic medicine, the increase in the use of such medicines cannot be the percentage that Antoine cites
Lucy never says anything to hint that she disagrees with Antoine's evidenceD)It is unlikely that the increase in the use of anti-psychotic medicines by children will continue at the same rate
No mention of the future is given or impliedE) If the number of children taking anti-psychotoc drugs is given as a certain number, the actual rate of such drug use is even higher
Lucy never states or implies that the statistics are inaccurateI hope this helps!