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Environmentalist : The commissioner of the Fish and Game Authority would have the public believe that increases in the number...

GMAT Critical Reasoning : (CR) Questions

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Environmentalist : The commissioner of the Fish and Game Authority would have the public believe that increases in the number of marine fish caught demonstrate that this resource is no longer endangered. This is a specious argument, as unsound as it would be to assert that the ever-increasing rate at which rain forests are being cut down demonstrates a lack of danger to that resource. The real cause of the increased fish-catch is a greater efficiency in using technologies that deplete resources.

The environmentalist's statements, if true, best support which of the following as a conclusion?

A
The use of technology is the reason for the increasing encroachment of people on nature.
B
It is possible to determine how many fish are in the sea in some way other than by catching fish.
C
The proportion of marine fish that are caught is as high as the proportion of rain forest trees that are cut down each year.
D
Modern technologies waste resources by catching inedible fish.
E
Marine fish continue to be an endangered resource.
Solution

Passage Visualization

Passage Statement Visualization and Linkage
The commissioner of the Fish and Game Authority would have the public believe that increases in the number of marine fish caught demonstrate that this resource is no longer endangered. Commissioner's Argument: More fish caught = Less danger to fish population

Concrete Example:
  • 2020: 50 million fish caught → Commissioner claims low danger
  • 2023: 75 million fish caught → Commissioner claims even lower danger
Key Pattern: Higher catch numbers interpreted as positive indicator
This is a specious argument, as unsound as it would be to assert that the ever-increasing rate at which rain forests are being cut down demonstrates a lack of danger to that resource. Environmentalist's Counterpoint: Flawed reasoning exposed through analogy

Rain Forest Parallel:
  • 2020: 10 million acres cut → Does this mean forests are safe?
  • 2023: 15 million acres cut → Does this mean forests are even safer?
Logical Flaw: Increased extraction ≠ Resource safety
The real cause of the increased fish-catch is a greater efficiency in using technologies that deplete resources. True Explanation: Technology driving higher extraction rates

Technology Impact Example:
  • Old nets: 1,000 fish per day per boat
  • New sonar + advanced nets: 2,500 fish per day per boat
  • Result: 150% more fish caught with same fish population
Core Insight: Efficiency gains mask resource depletion
Overall Implication The Extraction Paradox: Improved technology creates illusion of resource abundance while actually accelerating depletion

Key Pattern: Higher catch numbers may indicate greater danger to fish populations, not less danger as the commissioner claims

Valid Inferences

Inference: The commissioner's reasoning leads to a conclusion opposite to what the evidence actually supports regarding marine fish endangerment.

Supporting Logic: Since the increased fish catch results from more efficient resource-depleting technologies rather than healthier fish populations, and since this mirrors the flawed logic of assuming increased deforestation indicates forest safety, the higher catch numbers actually suggest greater threat to marine fish resources rather than reduced endangerment. The commissioner mistakes technological efficiency gains for resource abundance.

Clarification Note: The passage supports that increased catch numbers can coexist with (and potentially indicate) increased danger to fish populations, but does not definitively establish the current endangerment status of marine fish.

Answer Choices Explained
A
The use of technology is the reason for the increasing encroachment of people on nature.
This goes too broad beyond what we can conclude. The environmentalist only discusses technology making fish-catching more efficient, not technology causing all human encroachment on nature. We can't make such a sweeping generalization from the specific example about fishing technology.
B
It is possible to determine how many fish are in the sea in some way other than by catching fish.
The argument doesn't provide any support for alternative methods of counting fish. The environmentalist's point is about interpreting catch data correctly, not about finding different ways to measure fish populations.
C
The proportion of marine fish that are caught is as high as the proportion of rain forest trees that are cut down each year.
The rain forest analogy illustrates flawed reasoning patterns, not actual proportional comparisons. The environmentalist uses the analogy to show logical similarity, not to equate the specific rates of resource extraction.
D
Modern technologies waste resources by catching inedible fish.
The passage mentions technologies that 'deplete resources' but doesn't specify that this waste comes from catching inedible fish. The depletion could result from over-extraction of edible fish or other forms of inefficiency not mentioned.
E
Marine fish continue to be an endangered resource.
This flows directly from the environmentalist's logic. If the commissioner is wrong to think higher catches indicate safety (like assuming deforestation indicates forest health would be wrong), and if higher catches actually result from resource-depleting technology, then the fish population remains endangered despite appearing abundant through catch numbers. This is the most supported conclusion.
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