IMO, there's no better way to look at boldface answer choices than by trying to simplify them to read not more than 7-8 words, as well as to form a judgement prior to reading the options regarding what purpose could each portion serve.
The curator talks about historical buildings being reconstructed after their destruction. Historians states these buildings hold a candle to the originals - worthy of admiration. And the reason the historians give: "Same architecture style, often indistinguishable from the originals"
The curator, however, proceeds to contradict the historians. At first, s/he redefines what makes these buildings valuable: a direct link to the past. And then highlights what implication does this link have to the current reconstructions: this sense of value/authenticity is diminished.
Clearly, the first boldface highlights the reasoning why historians (who the curator contradicts) consider these buildings valuable.
The second boldface is now the curator's assertion, highlighting the result of his contradiction (that reconstructed buildings lose their value).
Now, we can see the options to relate to the above line of reasonings. We will also summarize / simplify / shorten them for better understanding:
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A. "The first is a premise of the curator's argument; the second objects his/her conclusion."
Firstly, we will need to identify what is the curator's argument and conclusion. The argument is - "part of what makes historical buildings value is their authentic link to the past"; the conclusion is - "That sense of authenticity is diminished when a building is reconstructed".
Now does the boldface that "historians believe these reconstructed buildings are the same as original" act as a premise for the argument that "part of what makes buildings valuable is their authenticity? Not quite - a premise would give context to the argument, this simply contradicts it. Hence, A can be eliminate.
The second boldface, as well, doesn't really object to the curator's conclusion, but in fact, supports the conclusion / is the implication of the conclusion.
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B. "The first is evidence for a claim; the second shows how the evidence supports the curator's conclusions"
Now, from our reasoning of option A and reasoning of the stem, we know that the first explains what historians believe - which directly translates to 'evidence for a claim'. But the second, however, while concluding the argument of the curator, isn't about the role the evidence plays - the evidence really just contradicts it, doesn't support it at all. Hence, eliminate.
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C. "The first defends curator's assumption; The second highlights that the curator's conclusion actually undermines the historian's claim"
Here, the option's right about the second boldface - it does, in fact, contradict the historian's claim. However, the first boldface doesn't defend any assumption made by the curator - it simply contradicts the curator's claim. Hence, disregard.
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D. "The first is the claim the curator directly challenges; the second is the conclusion the curator's argument defends"
Close, very close. However, a subtlety: The direct challenge is not to the boldface. The curator isn't saying the reconstructed buildings don't preserve the same style, or are not indistinguishable from older structures, but commenting on the abstract authenticity, thus challenging their perceived "value" and "authenticity".
The second is pretty much what the option states.
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E. Now, that's more like it. We based on my analysis of D can understand that it isn't the boldface, but the value / authenticity in an abstract sense the curator opposes; in this regard, the first boldface does in fact support the historian's position and not act directly as the historian's position. Finally, the second boldface adds to the assertion that what makes historic buildings value is their link to the past, by stating that this diminishes the sense of authenticity when a building is known to be a reconstruction. The conclusion is "reconstructed buildings are not authentic", and the second boldface states why this is the case (or in the option, "elaborates on the justification of for the curator's conclusion". -----------------------
Bunuel
Museum curator: Some old buildings in our city have been reconstructed after earthquakes, and lively new public spaces have emerged within them. Some historians maintain that these reconstructed buildings are as worthy of admiration as the originals.
They preserve the same architectural style and are often indistinguishable from the older structures. However, part of what makes historic buildings valuable is that they are authentic physical links to earlier generations.
That sense of authenticity is diminished when a building is known to be a reconstruction.Which of the following best describes the roles of the two portions in boldface?
A. The first is a premise of the curator’s argument; the second addresses an objection to the curator’s conclusion.
B. The first presents evidence for a claim; the second explains why that evidence supports the curator’s conclusion.
C. The first defends an assumption made by the curator; the second explains why the curator’s conclusion undermines the position that the curator challenges.
D. The first is the claim that the curator directly challenges; the second is the conclusion defended by the curator’s argument.
E. The first is used to support the position that the curator opposes; the second elaborates on the justification for the curator’s conclusion.
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