All practice questions

When traditional hierarchical corporations transition to a "flat" organizational structure, they typically experience a short-term decrease in overall productivity. However, companies that implement comprehensive peer-review systems alongside the flat structure see their productivity return to pre-transition levels within six months. Companies that transition to a flat structure without implementing peer-review systems consistently report productivity levels below their pre-transition baseline even after two years. A recent industry report found that the majority of companies transitioning to a flat structure do not implement comprehensive peer-review systems. Which of the following statements are most strongly supported by the information above? (Select all that apply.)

Botanist: Any plant species that thrives in highly alkaline soil must possess an extensive taproot system. The newly discovered Silene deserti thrives in highly alkaline soil. Therefore, Silene deserti must be capable of surviving prolonged periods of drought.

Statement: The assumption that 'any plant species capable of surviving prolonged periods of drought possesses an extensive taproot system' is sufficient to logically guarantee the botanist's conclusion.

Historian: A newly deciphered administrative tablet from the ancient city of Oakhaven lists the daily rations given to the city's palace guards. These rations consisted entirely of barley and dried fish. In contrast, military records from the neighboring city of Riverton from the same period explicitly mention supplementary rations of figs and olives for their guards. Therefore, Oakhaven's palace guards must have had a less varied diet than Riverton's guards.

Which one of the following is an assumption required by the historian's argument?

If a software application incorporates end-to-end encryption, it cannot be effortlessly intercepted by third-party eavesdroppers. The new messaging platform 'ChatSecure' cannot be effortlessly intercepted by third-party eavesdroppers. Therefore, 'ChatSecure' must incorporate end-to-end encryption.

Which one of the following arguments contains a flawed pattern of reasoning most similar to the one exhibited in the argument above?

Read the four short passages below, drawn from diverse fields of study. Each passage contains a specific error in reasoning. Select the abstract description that best identifies the structural flaw present in each argument.

Read the following scenario and the apparent paradox it presents.

Scenario: A regional agricultural department introduced a new species of insect, the Alerian wasp, to prey on aphids that were severely damaging local apple orchards. One year after the introduction of the wasps, biologists confirmed that the aphid population in the orchards had plummeted by over 80 percent. Paradoxically, the total yield of apples harvested from the orchards this year is significantly lower than it was during the height of the aphid infestation.

Match each of the following candidate statements to its logical effect on the paradox.

Historian: In the mid-14th century, settlements in the Variscan Highlands that had recently adopted the 'deep-furrow' agricultural method experienced a 40 percent greater population decline during the regional famine than neighboring Variscan settlements that retained traditional shallow tilling. Therefore, the deep-furrow method was likely more susceptible to the severe drought that caused the famine, leading to more catastrophic crop yields and higher starvation rates in the settlements that used it.

Which of the following, if true, most seriously weakens the historian's argument?

Coffee Importer: Our cooperative should immediately convert all conventional sun-grown coffee farms to shade-grown coffee. Although shade-grown farming yields $30\%$ fewer beans per hectare, shade-grown specialty beans sell for a $50\%$ premium over conventional beans. Therefore, making this complete conversion will undoubtedly increase the cooperative's overall profits.

Which of the following are necessary assumptions upon which the coffee importer's argument depends? Select all that apply.

Read the stimulus below. Is the provided statement regarding the argument's logical flaw true or false?

Stimulus:
Sports Physiologist: The national cycling team uses a new carbon-fiber bicycle frame, while the regional team uses standard aluminum frames. In recent trials, the national team riders recorded an average speed 15 percent slower than the regional team. However, the national team was testing their bikes on a mountainous outdoor course with steep inclines, whereas the regional team rode on a flat indoor track. Therefore, if the national team had ridden on the flat indoor track, their average speed would have been significantly faster than that of the regional team.

Statement to Evaluate:
The sports physiologist's argument is flawed because it concludes that removing a comparative disadvantage will not only eliminate a performance gap but actually reverse the disparity, without providing evidence that the national team possesses an inherent advantage.

Marine biologist: The population of the rare blue-finned reef fish in the Coral Bay sanctuary will likely begin to increase over the next few years. Last year, authorities implemented a strict ban on all fishing in the sanctuary. Since the ban took effect, the number of blue-finned reef fish caught by illegal fishers has plummeted. This critical reduction in human-caused mortality provides the species with the necessary conditions to replenish its numbers.

Which one of the following is an assumption required by the marine biologist's argument?

Last year, Zenith Manufacturing Plant replaced all of its aging metal-cutting machines with state-of-the-art laser cutters. The manufacturer of the laser cutters guaranteed that they operate at twice the cutting speed of Zenith’s old machines and produce a significantly lower percentage of defective parts. However, an internal audit revealed that Zenith’s total monthly output of successfully finished, non-defective parts actually declined after the laser cutters were fully installed and operational.

Which one of the following, if true, most helps to resolve the apparent discrepancy described above?

While the rapid desertification of the Sahara during the Holocene epoch is well documented, the primary catalyst for this profound climatic shift remains a subject of intense debate. Traditional climatological models frequently point to variations in the Earth’s orbit, which incrementally reduced solar radiation in the Northern Hemisphere. However, recent sediment core analyses extracted from Lake Chad reveal a sudden, drastic collapse in regional vegetation rather than the gradual decline predicted by orbital models. This abrupt loss of plant life would have significantly increased the region's surface albedo—the proportion of solar radiation reflected back into space. Because higher albedo directly leads to decreased regional temperatures and a consequent disruption of monsoonal rainfall patterns, the abrupt vegetation loss would have initiated a severe, self-reinforcing negative feedback loop. Therefore, while gradual orbital variations undoubtedly set the stage, it was the rapid collapse of local flora that served as the primary driver of the Sahara's sudden transition to an arid landscape.

Based on the logical structure of the author's argument, arrange the following claims in order from the most foundational supporting evidence to the author's overarching main conclusion.

Software Architect: Any digital application that successfully maintains user trust must incorporate transparent data privacy policies. Our upcoming fitness tracking application features completely transparent data privacy policies that detail exactly how all biometric information is stored and processed. Therefore, we can be confident that our new fitness tracking application will successfully maintain user trust.

Which of the following most accurately describes a flaw in the software architect's reasoning?

In a long-term ecological study, botanists discovered that in forest sectors where the canopy was artificially thinned to allow maximum sunlight to reach the ground, individual Silver-leaf Ferns exhibited a 40 percent faster growth rate and produced twice as many spores per plant as ferns in fully shaded sectors. Nevertheless, comprehensive surveys reveal that the total geographic area covered by Silver-leaf Ferns in the thinned-canopy sectors is substantially smaller than the area they cover in the adjacent fully shaded sectors.

Which of the following most accurately describes the apparent discrepancy presented in the information above?

For any bureaucratic system to achieve total efficiency, it must either eliminate its redundant departments or fully automate its record-keeping. However, a bureaucratic system can fully automate its record-keeping only if it secures a massive influx of external funding. Given that no bureaucratic system ever secures a massive influx of external funding, a bureaucratic system can achieve total efficiency only if it eliminates its redundant departments.

Which of the following arguments is most similar in its pattern of reasoning to the argument presented above?

Botanist: The traditional view among ecologists is that the rapid decline of the indigenous Luminis plant population in the valley was caused by an influx of herbivorous beetles. However, recent field data reveals that during the five years immediately preceding the plant's near-extinction, the plants significantly decreased their production of toxic alkaloids—their primary natural defense against the beetles. If the beetles were truly the primary threat, the plants would have evolved to increase, rather than decrease, their alkaloid production. Therefore, the decline of the Luminis plant must have been caused by a different environmental factor, such as nutrient depletion in the soil.

Which one of the following, if true, most weakens the botanist's argument?

Many supermarkets employ a pricing strategy known as the 'loss leader.' In this approach, a store intentionally sells a highly popular, everyday item—such as milk or bread—at a price lower than its wholesale cost, thereby taking a financial loss on every sale of that item. The underlying rationale is that customers will be drawn into the store to purchase the discounted item and, while there, will also buy several other items that carry high profit margins. Ultimately, the profits generated from these additional purchases more than compensate for the initial financial loss.

Which of the following scenarios is most logically analogous to the pricing strategy described in the passage?

Read the short passage below and determine the most appropriate single word to logically complete the author's argument.

Transportation Planner: The city council proposes combating severe gridlock by replacing our entire fleet of human-driven taxis with a unified system of autonomous electric pods. Proponents claim that because these pods communicate seamlessly to coordinate speeds, they will completely eliminate the stop-and-go ripple effects caused by human braking. However, to operate continuously, the pods require a specialized inductive-charging lane to be carved out of the existing roadways on every major thoroughfare. Since this reallocation will reduce the number of lanes available to the vast majority of vehicles—which are not taxis—adopting the pod system will inevitably exacerbate the city's overall gridlock.

Which one of the following is an assumption on which the transportation planner's argument depends?

Match each paradoxical scenario with the underlying causal mechanism that most effectively resolves its apparent discrepancy.