The author’s description of how coins were adulterated is included in the passage in order to
The passage indicates that the advances brought about by the probing process included
I. an eficient means of ascertaining the purity of a metal
II. a means by which governments could standardize currency values
III. a measure of security against adulterated coins
The passage most strongly indicates that the author would agree with which of the following statements?
If the claims of the passage are correct, then which of the following best explains why the interpretation of X in conjunction with the negation of Y was eliminated as claimed from the highlighted text?
The final sentence of the passage mentions the elimination of "alternative explanations" of the 1998 study results. The passage most strongly suggests that the author wanted to eliminate the explanations in order to
The use of bets in the 1998 study was intended to deflect objections that would be based on which of the following issues?
Which one of the following most accurately expresses the main point of the passage?
The passage provides the strongest support for inferring that Lessing holds which one of the following views?
In the first paragraph, the author refers to a highly reputed critic’s persistence in believing van Meegeren’s forgery to be a genuine Vermeer primarily in order to
The reaction described in which one of the following scenarios is most analogous to the reaction of the art critics mentioned in line 13?
The passage provides the strongest support for inferring that Lessing holds which one of the following views?
One summer, floods covered low-lying garlic fields situated in a region with a large mosquito population. Since mosquitoes lay their eggs in standing water, flooded fields would normally attract mosquitoes, yet no mosquitoes were found in the fields. Diallyl sulfide, a major component of garlic, is known to repel several species of insects, including mosquitoes, so it is likely that diallyl sulfide from the garlic repelled the mosquitoes.
Which of the following, if true, most strengthens the argument?
A recent study suggests that Alzheimer’s disease, which attacks the human brain, may be caused by a virus. In the study, blood from 11 volunteers, each of whom had the disease, was injected into rats. The rats eventually exhibited symptoms of another degenerative neurological disorder, Creutzfeldt-Jakob disease, which is caused by a virus. This led the scientist who conducted the study to conclude that Alzheimer’s disease might be caused by a virus.
Which one of the following statements, if true, would most strengthen the scientist’s hypothesis that Alzheimer’s disease is caused by a virus?
Fearing that the use of titles indicating position in the corporation tends to make the corporate hierarchy rigid by inhibiting communication, some corporations shun the use of executive titles. A title, however, can facilitate an executive's dealings with external businesses since it encourages outsiders to treat the executive with respect. The obvious compromise is for these executives to use their titles externally but not within their corporations.
Which of the following, if true, provides the most support for the compromise suggested above?
Firms adopting “profit-related-pay” (PRP) contracts pay wages at levels that vary with the firm’s profits. In the metalworking industry last year, firms with PRP contracts in place showed productivity per worker on average 13 percent higher than that of their competitors who used more traditional contracts.
If, on the basis of the evidence above, it is argued that PRP contracts increase worker productivity, which of the following, if true, would most seriously weaken that argument?
A recent study demonstrated that parents living with children consume nearly five more grams of fat per day, on average, than do adults living without children. The higher fat intake among these parents is probably attributable to their snacking on the pizza and cookies that tend to be plentiful in households with children.
Which of the following, if true, would most seriously weaken this explanation of the parents' higher fat intake?
The Occupational Safety and Health Administration (OSHA) was established to protect workers from accidents and unsafe conditions on the job. There has actually been an increase in the number of jobrelated accidents under OSHA. This demonstrates the agency's ineffectiveness.
Which of the following, if true concerning the period during which the increase occurred, most seriously weakens the argument above?
When news periodicals begin forecasting a recession, people tend to spend less money on discretionary purchases. Therefore, the perceived threat of recession decreases the willingness of people to purchase products that they regard as optional or luxury goods.
The argument above assumes that _
Shiraki: Overtime work is a bad response to situations where orders from clients exceed normal production capacity: overtime is expensive, and the quality of work declines as the proportion of overtime work increases.
Jackson: The alternative-increasing basic capacity-has the same disadvantages, because inexperienced staff must be hired and experienced production staff must be reassigned to train newly hired workers.
Assuming that both of the positions above are correct, clarification of which of the following issues would be most important in deciding which of the two alternatives to choose?
A television news network has recently been criticized for failing to give as much time to individuals who do not believe climate change is occurring as they do to scientists who believe climate change is occurring, even though the network does give equal time to all sides of the debates over immigration, tax reform, and gun policy. The network claims that they only give equal time to both sides of a debate when one side cannot be definitively proven by existing scientific research.
Which of the following can be correctly inferred from the information given above?
Radial keratotomy (RK), a surgery that is designed to reshape the cornea so that light focuses correctly on the retina, is supposed to make eyeglasses or contact lenses that correct for nearsightedness unnecessary. Yet a study of patients who have undergone RK shows that some of them still need to wear glasses or contact lenses.
Each of the following, if true, would help to resolve the apparent discrepancy in the information above EXCEPT:
Police Chief of Megalopolis: Five years ago, the city’s police department introduced innovative policing strategies. Since then, the crime rate in Megalopolis has declined significantly. Our new strategies should be credited with bringing about the decline. It has been objected that there have been significant declines during the past five years in crime rates throughout the nation and that therefore Megalopolis' crime rate would probably have declined even without the new policing strategies. Once we had introduced the new strategies, however, they were soon adopted by police departments in cities throughout the nation, and it was only then that crime rates in those cities began to decline.
In the police chief’s argument, the two underlined portions play which of the following roles?