Logical Reasoning
PrepTest 131 Section 2
Find the question you’re working on. Explore the reasoning, understand each answer, and learn from your mistakes.
Choose a question
Explanations for every question, find them by number or text.
- Q1:
On the Caribbean island of Guadeloupe, a researcher …Strengthen
Eating the tropical fruits soursop, custard apple and pomme cannelle causes atypical Parkinson’s.
- Q2:
- Q3:
Despite the enormous number of transactions processed daily …Most Strongly Supported
Banks have an enormous number of transactions.
- Q4:
Scientist: While studying centuries-old Antarctic ice …Flawed Reasoning
Atmospheric pollution caused global temperatures to rise in the 1500s.
- Q5:
- Q6:
Although Jaaks is a respected historian, her negative review …Flawed Reasoning
Jaaks’ negative review of Yancey’s book relies on a mistake.
- Q7:
Columnist: It has been noted that attending a live musical …Role in Argument
There must be some other reason that live music is richer than recorded music.
- Q8:
Though ice cream is an excellent source of calcium …Flawed Reasoning
People must have decided to get their calcium from cheddar cheese instead of ice cream.
- Q9:
No member of the Richardson Theatre is both a performer …Flawed Parallel Reasoning
Leon and Marta must be performers.
- Q10:
Chemical fertilizers not only create potential health hazards …Identify the Conclusion
The fact that chemical fertilizers destroy earthworms is enough reason not to use chemical fertilizers.
- Q11:
- Q12:
A theoretical framework facilitates conceptual organization …Complete the Argument
Using a theoretical framework is not the best way to do historical research.
(This was my prediction. The actual answer is a bit different.)
- Q13:
Bethany: Psychologists have discovered a technique …Principle – Justify
Psychologists should identify children prone to nightmares, and teach them to have pleasant dreams instead.
- Q14:
At one sitting, a typical doughnut eater consumes 4 doughnuts …Necessary Assumption
There’s little difference between a typical doughnut eating session and a typical bagel eating session, in terms of calories.
- Q15:
Bowers: A few theorists hold the extreme view that society …Flawed Reasoning
The anarchist theories ignore that any acceptable social philosophy must promote peace and order. Anarchism deserves no further attention.
- Q16:
- Q17:
Teachers should not do anything to cause their students to …Sufficient Assumption
Teachers shouldn’t pretend to know answers when they don’t.
- Q18:
Contrary to Malthus's arguments, human food-producing capacity …Role in Argument
Malthus will probably eventually be proven correct.
- Q19:
At a gathering at which bankers, athletes, and lawyers …Must be True
Lawyer or ~~Athlete~~ → ~~Banker~~
Banker → ~~Lawyer~~ and Athlete
- Q20:
Quality control investigator: Upon testing samples …Flawed Reasoning
The manufacturer violated their contract.
- Q21:
Essayist: When the first prehistoric migrations of humans …Weaken
The microorganisms that humans carried to North America probably caused the mass extinctions.
- Q22:
A recent study confirms that nutritious breakfasts make …Strengthen
A new study shows that nutritious breakfasts improve worker productivity.
- Q23:
This year a flood devastated a small river town …Principle – Conform
Hollyville, in the past, sent little aid after an earthquake occurred elsewhere.
- Q24:
Market analyst: According to my research, 59 percent of …Complete the Argument
Interest rates probably aren’t the main selling points of credit cards.
- Q25:
About 3 billion years ago, the Sun was only 80 percent …Weaken
The level of carbon dioxide was likely much higher three billion years ago than it is today.
- Q26:
Commentator: For a free market to function properly …Sufficient Assumption
The auto repair industry isn’t a properly functioning free market.
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