Soru

Zorluk: OrtaSentence Fragments

Although slime molds lack a brain or nervous system, they can solve complex mazes and navigate toward food sources. By leaving a trail of translucent slime as they explore, which serves as a form of externalized spatial memory that prevents them from revisiting areas they have already searched.

Which option corrects the underlined portion to ensure the sentence is grammatically complete?

  1. A
    By leaving a trail of translucent slime as they explore, which serves
  2. B
    They leave a trail of translucent slime as they explore, this serves
  3. C
    They leave a trail of translucent slime as they explore; which serves
  4. They leave a trail of translucent slime as they explore, a behavior that servesCevap

Cevap

The correct option is the one that changes the segment to 'They leave a trail of translucent slime as they explore, a behavior that serves'. This provides an independent clause followed by an appositive noun phrase that modifies the preceding action, correcting the sentence fragment.
The correct choice resolves the fragment by creating a complete independent clause. It replaces the prepositional phrase with a subject ('They') and a verb ('leave'). The following appositive phrase ('a behavior that serves...') grammatically and concisely modifies the preceding clause.

Adım Adım Çözüm

1
Analyze the original sentence structure
The original underlined phrase starts with the preposition 'By' and includes the relative pronoun 'which', making the entire second sentence a dependent clause and thus a sentence fragment.
Recognizing a sentence fragment requires identifying whether the sentence contains a subject and a verb that can stand alone as an independent thought.
2
Evaluate the distractors for grammatical errors
The option containing 'this serves' creates a comma splice by joining two independent clauses with only a comma. The option containing '; which serves' incorrectly uses a semicolon before a dependent clause.
Eliminating grammatically incorrect choices helps narrow down the options to the one that resolves the fragment without introducing new punctuation or coordination errors.
3
Verify the correct option
The option starting with 'They leave a trail...' forms a complete independent clause. The appositive 'a behavior that serves...' correctly describes the action without introducing a new independent clause or fragment.
Ensuring the selected choice forms a grammatically correct, coherent sentence that fits the context of the surrounding passage.

Anahtar Kavram

Identifying and correcting sentence fragments by ensuring the sentence contains at least one independent clause and is punctuated correctly.
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