Examkin

Question

Difficulty: MediumAuthor Tone and Attitude

In evaluating the hydrodynamic models proposed to explain the catastrophic late Pleistocene Missoula floods in the Pacific Northwest, geomorphologist Dr. Aris Thorne challenges the long-standing assumption that ice-dam breach frequency was uniform across glacial cycles. While earlier researchers treated the catastrophic outburst events as periodic and mechanically identical iterations, Thorne’s high-resolution sedimentological analyses reveal significant variance in flood discharge velocities and sediment transport capacity over successive surges. Thorne does not dismiss the foundational role of ice-dam failure in shaping the Channeled Scablands; rather, he argues that prevailing computational simulations oversimplify subglacial hydrology by ignoring thermal erosion along the ice-rock interface. Critics contend that Thorne’s sample sites are geographically concentrated in proximal scabland tracts, potentially overrepresenting localized flow turbulence. Nevertheless, Thorne’s nuanced framework offers a compelling alternative to rigid cyclic models, even if his assertions regarding subglacial thermal dynamics remain somewhat speculative pending further core sampling.

Which of the following best characterizes the author's attitude toward Dr. Aris Thorne's framework?

  1. A
    Unreserved enthusiasm for its definitive refutation of traditional ice-dam failure models
  2. B
    Dismissive rejection of Thorne's findings due to their reliance on geographically restricted data
  3. Tentative endorsement of its main perspective paired with recognition of unverified elementsAnswer
  4. D
    Complete skepticism regarding the applicability of sedimentological data to late Pleistocene paleohydrology
  5. E
    Strict neutrality that avoids passing judgment on the validity of Thorne's proposed alternative

Answer

The author displays a tentative endorsement of Thorne's main perspective paired with recognition of unverified elements.
The passage highlights the author's positive view by calling Thorne's work a 'compelling alternative,' while simultaneously exercising scholarly caution by noting that aspects of the model remain 'somewhat speculative.' The option phrasing 'tentative endorsement of its main perspective paired with recognition of unverified elements' captures this exact dual nuance without overstating or understating the sentiment.

Step-by-Step Solution

1
Identify the author's evaluative statements regarding Thorne's framework in the text.
The author describes the framework as 'a compelling alternative to rigid cyclic models' but adds that assertions on subglacial thermal dynamics remain 'somewhat speculative pending further core sampling.'
Determining the author's attitude requires looking for specific tone markers and qualifying phrases used directly by the author.
2
Distinguish the author's stance from the viewpoints of other parties mentioned in the passage.
Earlier researchers assumed uniform breach frequency, critics noted geographical concentration in sample sites, and Thorne proposed thermal erosion. The author balances these by praising Thorne's alternative while explicitly noting its speculative aspect.
Avoiding conflation between the author's perspective and the opinions of critics or prior scholars is critical for tone questions.
3
Match the balanced tone evidence to the option that captures both positive assessment and qualification.
The description of a 'tentative endorsement' coupled with 'recognition of unverified elements' precisely reflects 'compelling alternative' alongside 'somewhat speculative'.
GRE tone questions routinely feature correct answers with qualified vocabulary (e.g., tentative endorsement, measured approval).

Key Concept

Author Tone and Attitude (Qualified Assessment)
Rate this question

Topics

Author Tone and Attitude

More questions from this topic