Logical Reasoning

PrepTest 121 Section 4 Explanations

PrepTest 121 Section 4 is a Logical Reasoning section with 26 questions. It covers Flaw, Weaken, and Paradox questions, spanning Easy to Hard difficulty. Each explanation breaks down the right answer, the wrong-answer traps, and what to practice next.

Question 1

While 65 percent of the

EasyMain Conclusion

Question 2

Sleep research has demonstrated that

EasyStrengthen

Question 3

Since 1989 the importation of ivory

EasyMost Supported

Question 4

My suspicion that there is some

EasyParallel Flaw

Question 5

The best explanation for Mozart’s

MediumRole

Question 6

In the first phase of Industrial

EasyMost Supported

Question 7

For many types of crops,

EasyParadox

Question 8

This stamp is probably highly valuable,

MediumSufficient Assumption

Question 9

A recent study of several

MediumWeaken

Question 10

The proposed coal-burning electric

EasyNecessary Assumption

Question 11

Psychiatrist: While the first appearance

MediumFlaw

Question 12

Some species are called “indicator species”

EasyMain Conclusion

Question 13

Columnist: Tagowa’s testimony in the

HardFlaw

Question 14

A new tax law aimed

EasyMust be True

Question 15

Trustee: The recent exhibit at

MediumFlaw

Question 16

Economist: A tax is effective

MediumPrinciple-Conform

Question 17

A large amount of rainfall

MediumFlaw

Question 18

Leadership depends as much on

MediumMust be False

Question 19

Fifty chronic insomniacs participated in

HardParadox

Question 20

Advertisement: The Country Classic is

EasyWeaken

Question 21

Sociologist: Traditional norms in our

HardSufficient Assumption

Question 22

If there is an election,

MediumParallel

Question 23

Company president: Our consultants report

HardWeaken

Question 24

Many Seychelles warblers of breeding

MediumParadox

Question 25

Therapist: In a recent study,

HardFlaw

Question 26

Researcher: It is commonly believed

HardWeaken