Practice Test 3 - LSAT Logical Reasoning

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

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1. At a mid-sized company, the HR director notes that after the firm introduced optional lunchtime yoga classes, reported workplace conflicts dropped by 30% over the next three months. Attendance records show that most departments had at least a few employees participating each week. The director concludes that offering yoga classes reduces conflict across the company, and recommends expanding the program to all offices to improve workplace harmony. Since conflicts fell soon after the classes began and participation was widespread, the director believes the classes were the key factor driving the improvement rather than any unrelated change in company conditions. Which one of the following, if true, most strengthens the argument?
2. A city analyst argues that the new bus lanes will reduce downtown air pollution. The analyst cites data showing that, in cities where bus travel times fell, total car trips into downtown also fell. The analyst adds that the new lanes will indeed reduce bus travel times because they prevent buses from being delayed by general traffic. So, the analyst concludes, the new bus lanes will reduce downtown air pollution. The conclusion follows logically if which one of the following is assumed?
3. Which of the following can be inferred from the information above?
4. Which of the following most closely parallels the reasoning in the argument?
5. Which one of the following assumptions permits the conclusion above to be properly drawn?
6. The role of the statement "Thus, weekday attendance is likely to rise." is to:
7. Which one of the following most accurately describes the argumentative strategy?
8. Which of the following, if true, most helps resolve the apparent paradox?
9. A city's transit agency reports that average weekday bus ridership rose by 12% this year compared with last year. Yet the agency also reports that total fare revenue from buses fell by 6% over the same period. The agency did not change the posted base fare, and surveys indicate that the typical bus trip length remained about the same. Moreover, the agency notes that the number of bus trips taken during peak commuting hours increased, not decreased. These facts seem difficult to reconcile given that more rides would ordinarily generate more revenue at the same fare. Which one of the following, if true, most helps to resolve the apparent discrepancy in the transit agency's reports?
10. A restaurant consultant argues that whenever a restaurant simplifies its menu, kitchen errors decrease, and when kitchen errors decrease, online ratings rise. The consultant notes that a restaurant's online ratings rose last month. Therefore, the consultant concludes that the restaurant must have simplified its menu. Since no franchise rule forced a menu change, the consultant concludes that the owner must have been more willing to make tough decisions than most restaurant owners. The pattern of reasoning above is most similar to that in which one of the following?
11. A nutrition blogger claims: All foods that are high in added sugar cause a rapid spike in blood glucose. This breakfast cereal is high in added sugar, even though it also contains fiber and protein. Therefore, eating this cereal will cause a rapid spike in blood glucose. The blogger says the other nutrients might matter for other health outcomes, but not for this one. The reasoning above conforms most closely to which one of the following principles?
12. Which of the following, if true, most helps to explain the apparent discrepancy?
13. A gym offered a free introductory class in weight training. Of the 40 people who attended, most bought a membership within a month, and many said the class made them feel welcomed. Since feeling welcomed motivates people to commit to a gym, the free class caused the increase in memberships. Therefore, if the gym offers a free introductory class every week, it will reliably boost membership sales long-term. Which one of the following, if true, most weakens the argument?
14. Which of the following, if true, most helps to resolve the paradox?
15. Which one of the following principles, if accepted, most justifies the historian's inference?
16. The role of the statement 'If a policy predictably harms the most vulnerable without offsetting benefit, it should be rejected.' is to
17. Which one of the following assumptions, if true, would enable the economist's conclusion to be properly drawn?
18. Which one of the following is an assumption required by the argument?
19. Which one of the following, if true, most strengthens the argument?
20. Which of the following, if true, most helps to explain the results of the longer trial?

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