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Practice Test 5 - LSAT Logical Reasoning

20 questions. Answer them in any order, then submit to see your score and every explanation.

  1. A professor argues: Every student who submits the weekly practice problems passes the final exam. Lina submits the weekly practice problems. Therefore, Lina will pass the final exam. The professor acknowledges that some students also pass without submitting the practice problems, but says that does not weaken the inference about Lina. Which one of the following principles, if valid, most justifies the reasoning above?
  2. Which one of the following, if true, casts the most doubt on the conclusion above?
  3. Which of the following best describes the pattern of reasoning in the argument?
  4. A recent survey found that people who drink coffee regularly report higher levels of energy throughout the day compared to those who do not. However, another study revealed that caffeine, found in coffee, can lead to increased fatigue later in the day. Which one of the following, if true, most helps to resolve the apparent discrepancy described above?
  5. If a person exercises regularly, their overall health will improve. Since many people in the town have gym memberships, it is likely that the overall health of the town will improve. Which one of the following assumptions is required by the argument?
  6. A homeowner argues that installing a programmable thermostat is worthwhile. The homeowner notes that, in homes where the thermostat automatically lowers the temperature while occupants are asleep or away, heating systems run fewer hours. The homeowner also notes that running the heating system fewer hours generally reduces energy bills. Therefore, the homeowner concludes that installing a programmable thermostat will reduce the home's energy bills. The reasoning assumes that if a device reliably causes a reduction in usage of a cost-driving system, then the device will tend to reduce the associated costs. The reasoning above most closely conforms to which one of the following principles?
  7. At a city-run coworking space, management is deciding whether to renew a vendor contract with a printing company. Last year, the printing company missed its stated turnaround time on 4% of orders, but every missed order was corrected within 24 hours at no extra charge. Also, the company's prices are 15% lower than any competitor's, and the space has a fixed annual budget for printing. Therefore, the coworking space should renew the contract with this printing company. Which one of the following principles, if valid, most justifies the reasoning above?
  8. A court clerk applies this principle when deciding whether to accept a late filing without a motion: A late filing may be accepted without a motion only if (1) it is no more than one business day late, and (2) the delay was caused by a documented failure of the court's electronic filing system. If either condition is not met, the clerk must require a motion for leave to file late. Which one of the following judgments most closely conforms to the principle above?
  9. A museum's lending policy states: The museum should lend an artwork to another institution only if (1) the borrowing institution provides proof of climate-controlled storage and (2) the borrowing institution agrees in writing to insure the artwork for its full appraised value. If either condition is not satisfied, the museum should not lend the artwork, even to a prestigious institution. Which one of the following situations is most consistent with the principle stated above?
  10. City Councilor Reyes: The city should replace most downtown curbside parking with protected bike lanes. Merchants worry about losing customers, but studies of similar streets show foot traffic rises when cycling feels safe. We can keep short loading zones for deliveries, and drivers can use nearby garages that are often half empty. Even if some drivers avoid downtown, fewer crashes and faster bus trips will make the area more attractive overall. Merchant Patel: Removing curbside parking will hurt sales. Many of my customers buy bulky items and will not carry them from a garage. Loading zones won't help shoppers, and "half-empty" garages can fill quickly during events. Safer cycling is good, but downtown's problem is affordability, not transportation. Reyes and Patel are committed to disagreeing about whether
  11. Which one of the following principles, if valid, most justifies prioritizing Rae?
  12. HR Director: We should keep pre-employment personality tests. They help identify applicants who thrive in teamwork, and our turnover fell after we started using them. They are quick and cost-effective. Labor Economist: Turnover can fall for many reasons, and those tests often screen out neurodivergent applicants without measuring job performance. Also, applicants learn to game them, so the results become noise. A cheap tool is not a good tool if it systematically excludes capable workers. The two speakers are committed to disagreeing about which one of the following?
  13. A publisher releases books in either hardcover or paperback. Every hardcover release includes a dust jacket. No paperback release includes a dust jacket. Book B includes a dust jacket and was released in exactly one format. Book C is paperback. Which one of the following can be properly inferred from the statements above?
  14. The flawed pattern of reasoning in the argument above is most similar to that in which one of the following?
  15. Which one of the following, if true, provides the most support for the conclusion above?
  16. Which one of the following, if true, provides the most support for the conclusion above?
  17. The conclusion follows logically if which one of the following is assumed?
  18. A technology company claims that implementing a new software system will increase employee productivity. The company argues that because the system automates many routine tasks, employees will have more time to focus on complex projects. Which one of the following principles, if valid, most justifies the reasoning above?
  19. Which of the following is most strongly supported by the statements above?
  20. A city transit agency painted bright murals inside several downtown subway stations. After the murals were completed, reported incidents of vandalism in those stations fell by nearly half compared with the same months the previous year. Riders also told surveyors that the stations felt "more cared for" and "less neglected." Because the murals were the main visible change to the stations, the murals must be responsible for the reduction in vandalism. The agency should therefore fund murals in every station to significantly reduce vandalism citywide. Which one of the following, if true, most weakens the argument?

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