Unplugged Practice Test: Logical Reasoning Set 1, Question 24 (Parallel Flaw)

Every ledger in the Amberly archive has stayed legible for 200 years. However, no paper record of any kind stays legible that long unless it is kept away from light. So it is the dark storage, not the ink these particular ledgers were written in, that accounts for their legibility.

24. Which one of the following contains flawed reasoning most similar to the flawed reasoning in the argument above?

1. (A)Every kiln at the Sorrel pottery reaches its target temperature. However, no kiln reaches its target temperature unless its seals are tight. So a potter who wants a kiln to reach its target should keep the seals tight.
2. (B)Every jeweler I know threads a needle on the first try. Every carpenter I know needs several tries. Thus it is close work with small objects, not steady hands, that does the real work when a needle gets threaded quickly.
3. (C)All of the gardeners who took prizes at the county fair grew their pumpkins in raised beds rather than in open ground. So anyone who wants a prize at that fair must use raised beds.
4. (D)Every applicant the firm took on last year had a glowing reference, though none had ever managed a team. Nobody who has never managed a team is ready to lead a department. So these applicants were taken on not because they were ready to lead.
5. (E)Attendance at the Ferncliff swimming pond climbs sharply in weeks when the schools are closed. But hardly anyone swims there unless the water is warm. So it is warm water, not the school calendar, that produces the higher attendance in those weeks.