Question

Difficulty: MediumFalse Dilemma (False Dichotomy)

Archeologist: The newly discovered temple ruins are rapidly deteriorating due to exposure to severe weather conditions. To prevent these ruins from being lost to future generations forever, we must immediately secure the funding to build a state-of-the-art, climate-controlled dome over the site. Therefore, anyone who cares about preserving our history will support this funding initiative.

The archeologist's reasoning is most vulnerable to criticism on the grounds that it

  1. A
    takes for granted that anyone who supports the funding for the dome must also care deeply about preserving history
  2. fails to consider the possibility that alternative measures could be employed to shield the temple ruins from the elementsAnswer
  3. C
    illicitly relies on two different meanings of the term "preserve" in the course of the argument
  4. D
    presumes that because severe weather conditions and the deterioration of the ruins occur together, the weather must be the cause of the deterioration
  5. E
    relies on an assumption that the recently discovered temple ruins are the most historically significant artifacts in the region

Answer

The correct answer is the option that points out the failure to consider alternative preservation methods.
The archeologist's argument presents a problem (weather-related deterioration) and concludes that one specific solution (building a climate-controlled dome) must be supported by anyone who wants to solve the problem. This reasoning is flawed because it assumes that the proposed dome is the ONLY way to solve the problem. The argument entirely ignores the possibility of other preservation methods, such as constructing a simpler roof, applying protective chemical coatings, or reburying the ruins. By acting as though the dome and total destruction are the only two options, the argument presents a false dilemma.

Step-by-Step Solution

1
Identify the core components of the archeologist's argument.
Premise: The ruins are deteriorating due to weather, and we must save them. Conclusion: We must fund a climate-controlled dome, and anyone who cares about history will support it.
Breaking down the argument into its structural pieces is essential for identifying the logical gap between them.
2
Analyze the logical leap between the premise and the conclusion.
The argument jumps from the general need to protect the ruins from the weather to the absolute necessity of one very specific, extreme solution (a climate-controlled dome).
Flaws in reasoning always occur in the gap between what is stated in the premises and what is claimed in the conclusion.
3
Categorize the flaw based on the identified logical leap.
The author assumes there are only two possibilities: build the specific dome or lose the ruins forever. This overlooks other potential solutions.
Matching the gap to a known LSAT flaw category (False Dilemma / Overlooked Alternative) allows you to confidently select the correct answer choice.

Key Concept

False Dilemma (False Dichotomy)
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