Logical Reasoning

PrepTest 138 Section 4 Explanations

PrepTest 138 Section 4 is a Logical Reasoning section with 24 questions. It covers Necessary Assumption, Flaw, and Weaken questions, spanning Easy to Hard difficulty. Each explanation breaks down the right answer, the wrong-answer traps, and what to practice next.

Question 1

Jim's teacher asked him to

Question 2

All the books in the library

Question 3

The level of sulfur dioxide

EasyMust be True

Question 4

Ecologist: Landfills are generally designed

Question 5

Recent epidemiological studies report

Question 6

After an oil spill, rehabilitation centers were set up

Question 7

Psychologist: Research has shown that a weakened

EasyNecessary Assumption

Question 8

Adobe is an ideal material for

EasyMain Conclusion

Question 9

In one study of a particular plant species

Question 10

Letter to the editor: Sites are needed for disposal

Question 11

Most universities today offer students

Question 12

The government has recently adopted a policy

Question 13

Many economists claim that financial rewards provide

Question 14

Editorial: A proposed new law

MediumNecessary Assumption

Question 15

Camille: Manufacturers of water-saving faucets

HardNecessary Assumption

Question 16

Company spokesperson: In lieu of redesigning

Question 17

Humankind would not have survived

Question 18

Bus driver: Had the garbage truck

HardPrinciple-Strengthen

Question 20

Historian: Radio drama requires

HardNecessary Assumption

Question 21

Each of the candidates

HardParallel Flaw

Question 22

One of the most useful social conventions

HardSufficient Assumption

Question 23

Libel is defined as

HardPrinciple-Strengthen

Question 24

Mammals cannot digest cellulose

HardMost Supported

Question 25

A law is successful primarily