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Zorluk: OrtaLogical Inferences

To preserve historic silk textiles, conservators often regulate relative humidity (RH) to prevent fiber degradation. However, research by textile chemist Clara Alvarez indicates that maintaining a constant, low RH (below 30%30\%) can cause micro-fissures in silk fibers that have already undergone historical aging, making them highly susceptible to mechanical stress during handling. Conversely, keeping the RH above 50%50\% promotes fungal growth that enzymatically breaks down the silk's fibroin structure. Consequently, for museums planning to actively exhibit and periodically rotate aged silk garments, Alvarez suggests that

Which choice most logically completes the text?

  1. A
    micro-fissures in aged silk can be successfully repaired by temporarily raising the relative humidity above 50%50\% before handling the garments.
  2. maintaining the display environment's relative humidity between 30%30\% and 50%50\% is necessary to minimize both mechanical damage and fungal degradation.Cevap
  3. C
    fungal growth on silk garments is primarily triggered by the mechanical stress that occurs when the garments are handled at low relative humidity levels.
  4. D
    all historical organic textiles require relative humidity levels strictly between 30%30\% and 50%50\% to prevent any form of structural deterioration.

Cevap

maintaining the display environment's relative humidity between 30%30\% and 50%50\% is necessary to minimize both mechanical damage and fungal degradation.
The correct option states that the relative humidity should be maintained between 30%30\% and 50%50\%. This is directly supported by the passage, which outlines that relative humidity below 30%30\% causes micro-fissures that make the silk susceptible to stress during handling, while relative humidity above 50%50\% promotes fungal growth. Since the museum plans to actively exhibit and rotate (handle) the garments, maintaining the humidity within this intermediate range is necessary to avoid both forms of degradation.

Adım Adım Çözüm

1
Analyze the consequences of low relative humidity (below 30%30\%) mentioned in the text.
Low humidity makes aged silk garments vulnerable to mechanical stress, which is a key risk since the museum plans to handle them during active exhibition and rotation.
To identify constraints on the lower bound of relative humidity.
2
Analyze the consequences of high relative humidity (above 50%50\%) mentioned in the text.
High humidity (above 50%50\%) leads to fungal growth that enzymatically breaks down the silk fibers.
To identify constraints on the upper bound of relative humidity.
3
Synthesize the two findings to determine the safe operating range for active exhibition and rotation.
To prevent both mechanical damage from handling (which occurs below 30%30\%) and fungal breakdown (which occurs above 50%50\%), the relative humidity must be maintained between 30%30\% and 50%50\%.
To draw a logically valid, non-speculative conclusion that completes the passage.

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Logical Inferences
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Logical Inferences

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