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Difficulty: HardMulti-Blank Dependency Tracking

Consider the following excerpt regarding paleoclimate methodology:

Rather than providing a (i)________ rebuttal to the hypothesis of abrupt climate change during the Younger Dryas, the newly extracted ice core samples offered remarkably (ii)________ evidence; while the isotopic ratios initially appeared to confirm rapid cooling, subsequent trace-gas analyses revealed complex fluctuations that ultimately (iii)________ any definitive conclusion.

Which of the following combinations of terms correctly completes the blanks in the passage?

  1. (i) decisive; (ii) equivocal; (iii) precludedAnswer
  2. B
    (i) decisive; (ii) incontrovertible; (iii) sanctioned
  3. C
    (i) tentative; (ii) equivocal; (iii) sanctioned
  4. D
    (i) convoluted; (ii) incontrovertible; (iii) precluded
  5. E
    (i) decisive; (ii) equivocal; (iii) adumbrated

Answer

The combination '(i) decisive; (ii) equivocal; (iii) precluded' logically completes the passage by properly resolving inter-blank dependencies and structural transitions.
The correct choice establishes total logical coherence across all three blanks. The introductory transition 'Rather than' requires Blank (i) and Blank (ii) to stand in contrast: a 'decisive' (conclusive) rebuttal is contrasted with 'equivocal' (uncertain or ambiguous) evidence. The second clause elaborates on this ambiguity by noting that while one metric suggested cooling, another revealed complex fluctuations; such contradictions naturally 'precluded' (ruled out) any definitive conclusion.

Step-by-Step Solution

1
Analyze structural contrast clues governing Blank (i) and Blank (ii).
The opening structure 'Rather than providing a (i)________ rebuttal... samples offered remarkably (ii)________ evidence' signals an antonymous or opposing relationship between Blank (i) and Blank (ii).
Resolving either blank in isolation is impossible without ensuring that Blank (i) and Blank (ii) express contrasting levels of certainty.
2
Examine the context following the semicolon to determine the polarity of Blank (ii) and Blank (iii).
The phrase 'while isotopic ratios initially appeared to confirm... subsequent trace-gas analyses revealed complex fluctuations' indicates that the overall findings are ambiguous and conflicting.
Ambiguous evidence requires Blank (ii) to mean open to interpretation ('equivocal') and Blank (i) to mean conclusive ('decisive').
3
Determine the semantic fit for Blank (iii) based on the outcome of the complex fluctuations.
Data containing 'complex fluctuations' prevents or rules out a firm conclusion, requiring a verb meaning prevented ('precluded').
The word 'precluded' completes the causal chain showing how data complexity thwarted definitive closure.

Key Concept

Multi-Blank Dependency Tracking
Estimated Time:2m 0s
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Multi-Blank Dependency Tracking

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