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Zorluk: OrtaSubject-Modifier Agreement

First discovered in the depths of the Pacific Ocean in 1977, ________. These vents emit superheated, mineral-rich water, fueling ecosystems that do not rely on sunlight for energy.

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

  1. A
    scientists have since studied hydrothermal vents to gain crucial insights into the origins of life on Earth.
  2. hydrothermal vents have since provided scientists with crucial insights into the origins of life on Earth.Cevap
  3. C
    insights into the origins of life on Earth have since been gained by scientists studying hydrothermal vents.
  4. D
    the study of hydrothermal vents has since provided scientists with crucial insights into the origins of life on Earth.

Cevap

hydrothermal vents have since provided scientists with crucial insights into the origins of life on Earth.
The correct option correctly places 'hydrothermal vents' as the subject of the sentence, immediately following the introductory modifying phrase 'First discovered in the depths of the Pacific Ocean in 1977,' which logically describes the vents. The other choices create dangling modifiers by placing 'scientists,' 'insights,' or 'the study' as the subject immediately following the modifier.

Adım Adım Çözüm

1
Identify the introductory modifying phrase.
The phrase is 'First discovered in the depths of the Pacific Ocean in 1977.'
This phrase contains a past participle ('discovered') and describes a specific noun or pronoun that must immediately follow the comma.
2
Determine the logical subject of this modifier.
The thing that was 'discovered in the depths of the Pacific Ocean' is the 'hydrothermal vents.'
The sentence context refers to geological vents, not scientists, insights, or the abstract study of the vents.
3
Select the option that begins with the correct logical subject.
The correct option starts with 'hydrothermal vents' as the subject of the main clause.
Placing any other noun or pronoun immediately after the comma results in a dangling modifier error.

Anahtar Kavram

Subject-Modifier Agreement
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