(C) Tuition at most two-year community colleges is a fraction of that at four-year colleges.
(D) Two-year community colleges devote more resources than do other colleges to attracting those students especially affected by economic slowdowns.
(E) Students at two-year community colleges, but not those at most four-year colleges, can control the cost of their studies by choosing the number of courses they take each term.
Questions 18-19 are based on the following.
Hardin argued that grazing land held in common (that is, open to any user) would always be used less carefully than private grazing land. Each rancher would be tempted to overuse common land because the benefits would accrue to the individual, while the costs of reduced land quality that results from overuse would be spread among all users. But a study comparing 217 million acres of common grazing land with 433 million acres of private grazing land showed that the common land was in better condition.
18. The answer to which of the following questions would be most useful in evaluating the significance, in relation to Hardin’s claim, of the study described above?
(A) Did any of the ranchers whose land was studied use both common and private land?
(B) Did the ranchers whose land was studied tend to prefer using common land over using private land for grazing?
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