Verbal ReasoningGMAT Focus Edition

GMAT Flaw in Reasoning practice questions

Flaw in Reasoning is a high-yield GMAT topic. Work through these practice questions to build accuracy and speed before test day.

Free Flaw in Reasoning practice

5 sample questions

Practice Question 1easyCritical Reasoning

Archaeologists compared artifacts from two ancient sites, Site A and Site B. They found that tools from Site A were in better condition than those from Site B. Based on this, they concluded that Site A was more technologically advanced than Site B.

The reasoning in the argument is most vulnerable to criticism on which of the following grounds?

A.

It fails to consider whether the tools from both sites were used for the same purposes.

B.

It conflates the age of artifacts with their level of technological sophistication.

C.

It does not account for differences in the types of materials used at each site.

D.

It assumes that better-preserved artifacts must indicate greater technological advancement.

E.

It ignores the possibility that Site B's artifacts were damaged during excavation.

Practice Question 2mediumCritical Reasoning

A company survey found a strong correlation between employee engagement levels and productivity. Since the proposed wellness program is designed to increase engagement, the company predicts that implementing this program will lead to higher productivity.

The argument contains a flaw in its reasoning because it fails to consider which of the following?

A.

The fact that the survey measured productivity using self-reported data rather than objective performance metrics.

B.

That correlation between engagement and productivity might not imply causation from implementing the program.

C.

Whether the wellness program's stress-reduction features could improve productivity without affecting engagement levels.

D.

The possibility that employees who report higher engagement may be more likely to overestimate their actual productivity.

E.

The alternative explanation that declining industry-wide engagement could make the program appear effective when it is not.

Practice Question 3mediumCritical Reasoning

Agricultural researchers in a drought-prone region observed that crop yields increased by an average of 18% in years when farmers used a new irrigation method during periods of above-average rainfall. They conclude that adopting this irrigation system will lead to consistently higher yields in future growing seasons.

The argument is vulnerable to criticism on the grounds that it fails to consider which of the following?

A.

Whether the crops grown in the region are primarily for local consumption or export

B.

That historical weather patterns may not accurately predict future rainfall levels

C.

Whether the new irrigation method requires significantly more labor than traditional methods

D.

The possibility that other regions with similar rainfall patterns did not experience increased crop yields

E.

The cost difference between implementing the new irrigation system and maintaining traditional methods

Practice Question 4mediumCritical Reasoning

A company plans to implement new software that reduces operational costs. The management argues that this change will improve workplace productivity because reducing costs is essential for increasing efficiency.

The argument is vulnerable to criticism on which of the following grounds?

A.

It confuses a factor that enables productivity improvements with one that guarantees them.

B.

It assumes that all cost reductions necessarily translate to productivity gains.

C.

It presumes that no other factors besides cost reduction could affect workplace efficiency.

D.

It overlooks the possibility that the software implementation costs might exceed the projected savings.

E.

It fails to distinguish between short-term cost savings and long-term productivity benefits.

Practice Question 5mediumCritical Reasoning

Country X is considering adopting environmental regulations similar to those implemented in Country Y five years ago. Since Country Y's economy grew by 15% after implementing these regulations, proponents argue that Country X will experience similar economic growth if it follows suit.

The argument is most vulnerable to criticism on the grounds that it fails to consider which of the following?

A.

That public approval ratings of Country Y's government improved after the regulations were enacted

B.

The possibility that stricter environmental regulations could lead to increased innovation in cleaner technologies

C.

Whether the economic conditions in Country X were similar to those in Country Y when the regulations were implemented

D.

The fact that Country Y's regulations applied only to large corporations, not small businesses

E.

Whether other factors, such as technological advancements, contributed to Country Y's economic growth

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