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Difficulty: MediumIdentifying Main Conclusions

Architectural preservationists often insist that historical buildings must be maintained using exclusively period-accurate materials. This dogmatic approach is ultimately detrimental to the structures it seeks to protect. Preservation boards must become willing to incorporate modern synthetic materials into their restoration projects. These modern materials are significantly more durable than historical counterparts, meaning that buildings restored with them require far less frequent structural intervention over time. Minimizing repeated physical intervention is the single most critical factor in extending a historic building's total lifespan.

Which one of the following most accurately expresses the main conclusion of the argument?

  1. Preservation boards should be open to using modern synthetic materials when restoring historic buildings.Answer
  2. B
    Insisting on using only period-accurate materials is ultimately harmful to the historic buildings themselves.
  3. C
    Many architectural preservationists believe that historical buildings should only be restored using period-accurate materials.
  4. D
    The most critical factor in extending a historic building's lifespan is reducing the frequency of physical interventions.
  5. E
    Buildings restored with modern synthetic materials will not require any future structural interventions.

Answer

The main conclusion is that preservation boards must become willing to incorporate modern synthetic materials into their restoration projects.
The argument's central purpose is to persuade the reader that preservation boards should incorporate modern synthetic materials into restorations. The other statements in the stimulus—such as the durability of these materials and the harm caused by strictly using period-accurate ones—function as evidence and subsidiary conclusions to support this primary recommendation.

Step-by-Step Solution

1
Identify the author's primary recommendation or core assertion in the stimulus.
The author advocates that preservation boards must become willing to incorporate modern synthetic materials into their restoration projects.
The main conclusion is the statement that all other claims in the argument are intended to support.
2
Analyze the structural role of the other statements to confirm the main conclusion.
The statements about durability and minimizing physical intervention serve as premises supporting the recommendation. The claim that the strict approach is detrimental is an intermediate conclusion.
Validating that the identified statement is supported by the rest of the text ensures it is the main conclusion, not a premise or subsidiary claim.
3
Evaluate the answer choices to find the one that accurately paraphrases the main conclusion without adding outside information.
The correct choice accurately reflects the author's stance on incorporating modern synthetic materials, while the other choices represent premises, background context, or intermediate conclusions.
The correct answer must precisely match the meaning and scope of the argument's ultimate point.

Key Concept

Identifying Main Conclusions
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Topics

Identifying Main Conclusions

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