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Zorluk: Çok zorSubject-Modifier Agreement

Although previous models of Martian geologic history suggested the planet's core cooled rapidly, recent research presents a different timeline. Using a newly developed numerical simulation to model the thermal evolution of early Martian crustal reservoirs, _______

Which choice completes the text so that it conforms to the conventions of Standard English?

  1. A
    the simulation enabled planetary scientists to identify a surprisingly prolonged period of volcanic activity, thereby providing an explanation for the planet's asymmetric topography.
  2. planetary scientists have identified a surprisingly prolonged period of volcanic activity, thereby providing an explanation for the planet's asymmetric topography.Cevap
  3. C
    a surprisingly prolonged period of volcanic activity was identified by planetary scientists, thereby providing an explanation for the planet's asymmetric topography.
  4. D
    the identification of a surprisingly prolonged period of volcanic activity by planetary scientists provided an explanation for the planet's asymmetric topography.

Cevap

planetary scientists have identified a surprisingly prolonged period of volcanic activity, thereby providing an explanation for the planet's asymmetric topography.
The introductory modifying phrase 'Using a newly developed numerical simulation to model the thermal evolution of early Martian crustal reservoirs' describes an action. The noun immediately following the comma must be the logical actor performing this action. Since planetary scientists are the ones using the simulation, the main clause must begin with 'planetary scientists'. The correct option properly establishes this relationship, ensuring subject-modifier agreement.

Adım Adım Çözüm

1
Identify the introductory modifying phrase and its logical subject.
The modifying phrase is 'Using a newly developed numerical simulation...', and the logical actor performing this action must be 'planetary scientists'.
An introductory participial phrase must modify the subject of the main clause.
2
Evaluate the subject of the main clause in each choice.
Only the option beginning with 'planetary scientists' provides the correct logical subject immediately following the comma.
Placing any other noun (like 'the simulation', 'a surprisingly prolonged period', or 'the identification') as the subject creates a dangling or misplaced modifier error.

Anahtar Kavram

Subject-Modifier Agreement
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Konular

Subject-Modifier Agreement

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