1. Plant Y thrives in environments of great sunlight and very little moisture. Desert X is an
environment with constant, powerful sunlight, and almost no moisture. Although Plant Y thrives
in the areas surrounding Desert X, it does not exist naturally in the desert, nor does it survive
long when introduced there.
Which of the following, if true, would be most useful in explaining the apparent discrepancy above?
(A) Desert Xs climate is far too harsh for the animals that normally feed on Plant Y.
(B) For one week in the fall, Desert X gets consistent rainfall.
(C) The environment around Desert X is ideally suited to the needs of Plant Y.
(D) Due to the lack of sufficient moisture, Desert X can support very little plant life.
(E) Plant Y cannot survive in temperatures as high as those normally found in Desert X.
2. The World Automobile Association (WAA) publishes a list of the Best and Worst Drivers of
the World, ranking the drivers of every nation according to the number of traffic deaths per
mile driven in that country.
Each of the following, if true, would by itself provide a logical objection to using the WAAs ranking as a representation of the quality of drivers in each nation EXCEPT:
(A) The roads in some countries are in bad repair and are therefore more dangerous than roads in other countries.
(B) The average driver in industrialized countries can afford to maintain his or her car in better condition than can the average driver in less developed countries.
(C) Some countries contain hundreds of thousands of miles of road while other countries contain relatively few miles of road.
(D) Minor accidents that would cause little injury in many countries are often fatal when they occur in extremely mountainous countries.
(E) Because of differences in national economies, the average car in some countries contains many more passengers than does the average car in other countries.
3. The population increase over a given year is always calculated as a percentage of the previous years population, with a population decrease being recorded as a negative increase. In 1990 Essex County and Union County both experienced a population increase of more than 3 percent. In 1991 Essex County and Union County both experienced a population increase of 1.5 percent. In 1992 Union County
experienced a negative increase in population of 1.7 percent. Essex County had 209,100 residents in 1990 and 209,000 residents in 1992.
If the information above is accurate, which of the following must be true?
(A) Both counties experienced positive population increases in the years 1990 and 1991, yet both experienced negative population increases in 1992.
(B) In 1992 more people moved from Union County to Essex County than moved from
Essex County to Union County.
(C) In 1990 there were more people living in Union County than in Essex County, but in 1992 there were more people living in Essex County than in Union County.
(D) Both counties experienced negative population increases in the years 1990 and 1991, yet both experienced positive population increases in 1992.
(E) Both counties experienced positive population increases in the years 1990 and 1991, yet while Essex County experienced a positive increase in 1992, Union County had a negative increase.
4. Although statistics and definitions are inexact, educated guesses put the number of refugees worldwide at well over 10 million. The overwhelming majority prefer to return to their native land than to emigrate to a foreign one. The millions of refugees from Afghanistan are sufficient proof: Despite the toll the war and subsequent fighting have taken on their country, very few have applied for permission to emigrate.
Which of the following, if true, would most strengthen the argument above?
(A) Most refugees are as reluctant to emigrate as are the refugees from Afghanistan.
(B) The refugees from Afghanistan fled what they considered political oppression rather than economic disaster.
(C) Most of the children born to refugees prefer to remain in their adoptive country rather than return to the land their parents left.
(D) Although refugees flee their homes for a variety of different reasons, the overwhelming majority are looking for improved living conditions.
(E) The number of refugees worldwide has risen dramatically over the last ten years.
5. Recent statistics make it seem unlikely that the total consumption of electricity determines its
cost to individual consumers. Recent increases in total consumption, especially during the hot
summer months, have sometimes been accompanied by a decrease in the cost per unit
and at other times by an increase.
Which of the following positions is best supported by the information presented above?
(A) It must be the case that the cost of electricity to consumers is what determines the total consumption.
(B) Even though a correlation exists between the total consumption of electricity and its
cost to consumers, no causal relation exists.
(C) Further investigation into the way these statistics were gathered is certainly called
for.
(D) The cost of electricity depends upon something other than the total consumption of electricity.
(E) The cost-per-unit of electricity to consumers is dependent on the total electricity consumption.
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My Pick for the first problem is C because--The premise is that
Plant Y needs Sunlight + No moisture
Desert X has Sunlight(Constant powerful) + No moisture
In essence what it means is that Desert X Should be suitable for Y,but the reality is otherwise.
I took the elimination approach to this one.
A-If the temperature is harsh,then that would keep animals away--so that should help the plant Y to grow,
which is not the case
B-Just explains why it might not grow for a week but the argument says "it does not exist naturally in the desert, nor does it survive
long when introduced there"
D-Does not explain why it grows outside. In a discrepancy type problem both side of the problem needs
to be explained
E-Does not explain why it grows outside
My answers for the other 4 are (2)-B,(3)-A,(4)-C,(5)-B. Lemme know if I am close. I can then give my reasonings.