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Zorluk: OrtaBridging Gap (Supporter) Assumptions

Art conservator: Traditional chemical solvents used to clean Renaissance oil paintings often seep through the protective varnish and interact directly with the underlying paint pigments. A new cleaning technique, thermal plasma descaling, exclusively removes the outer layer of grime without penetrating the varnish at all. Thus, museums can be assured that employing thermal plasma descaling will never alter the original color balance of these Renaissance paintings.

The art conservator's argument depends on which one of the following assumptions?

  1. A
    Any cleaning technique that penetrates the protective varnish of a Renaissance oil painting will inevitably alter that painting's original color balance.
  2. B
    Thermal plasma descaling is currently the only available art restoration technique that avoids penetrating the protective varnish of Renaissance paintings.
  3. C
    Any cleaning technique that does not utilize traditional chemical solvents will avoid interacting directly with the underlying paint pigments.
  4. The original color balance of a Renaissance oil painting cannot be altered by a cleaning technique unless that technique penetrates the painting's protective varnish.Cevap
  5. E
    Museum conservators prioritize maintaining the original color balance of Renaissance paintings over achieving the complete removal of accumulated grime.

Cevap

The original color balance of a Renaissance oil painting cannot be altered by a cleaning technique unless that technique penetrates the painting's protective varnish.
This statement provides the necessary logical bridge between the premises and the conclusion. The author argues that because thermal plasma descaling does not penetrate the varnish, it will not alter the color balance. For this logic to hold, the author must assume that penetrating the varnish is a strict requirement for altering the color balance. If we apply the Negation Test—assuming that a painting's color balance CAN be altered by a technique that FAILS to penetrate the varnish—the conservator's entire argument falls apart.

Adım Adım Çözüm

1
Identify the conclusion of the argument.
The conclusion is that employing thermal plasma descaling will never alter the original color balance of Renaissance paintings.
Locating the main conclusion is essential for determining what the author is ultimately trying to prove.
2
Identify the premises supporting the conclusion.
The core premise is that thermal plasma descaling removes grime without penetrating the varnish at all.
Premises provide the stated evidence. The gap will exist between this evidence and the conclusion.
3
Spot the conceptual gap (new elements) in the conclusion.
The premise discusses 'penetrating the varnish', but the conclusion makes a leap to a new concept: 'altering the original color balance'.
In a Supporter Assumption question, the correct answer must explicitly bridge the new concept in the conclusion back to the concepts in the premises.
4
Formulate the required logical bridge.
The argument requires a rule stating that if a technique does not penetrate the varnish, it will not alter the color balance.
Without this rule, it remains entirely possible that thermal plasma descaling alters the color balance through some other mechanism (like heat) without ever penetrating the varnish.
5
Apply the Negation Test to the correct choice to verify it is necessary.
Negating the correct statement yields: 'The color balance CAN be altered even if a technique DOES NOT penetrate the varnish.' This destroys the author's conclusion.
The Negation Test is the definitive proof that an assumption is logically necessary for the argument.

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Bridging Gap (Supporter) Assumptions
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Bridging Gap (Supporter) Assumptions

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