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Question

Difficulty: HardSentence Fragments, Run-Ons, and Comma Splices

In formal academic prose, maintaining clear syntactic boundaries is critical for rhetorical precision. Which of the following sentences are grammatically complete and free of sentence boundary errors, such as sentence fragments, comma splices, and run-on sentences? Select all that apply.

  1. Although early quantum theorists posited that light exhibited dual wave-particle properties, subsequent empirical observations confirmed this hypothesis; consequently, classical physics underwent a fundamental paradigm shift.Answer
  2. B
    Sociological studies demonstrate that urbanization reshapes community cohesion, however, rural traditions often persist through intergenerational storytelling.
  3. While economic indicators suggested a robust recovery following the fiscal reforms, inflation rates rose sharply during the fourth quarter; this unexpected divergence forced central bankers to reevaluate their monetary policies.Answer
  4. D
    Whereas historians traditionally viewed the collapse of the agrarian economy as an abrupt event triggered solely by ecological degradation rather than prolonged structural decay.
  5. E
    Neuroscientists have identified specific neural pathways responsible for fear conditioning these mechanisms operate independently of conscious cognitive processing.

Answer

The correct selections are the sentence discussing quantum theorists and classical physics, and the sentence regarding economic indicators and monetary policies.
The sentence detailing quantum physics and classical paradigm shifts correctly uses a subordinate clause followed by two independent clauses properly joined with a semicolon and the conjunctive adverb 'consequently'. Similarly, the sentence addressing economic indicators and central bank policies correctly links its independent clauses using a semicolon, avoiding any boundary errors.

Step-by-Step Solution

1
Analyze each clause structure in the sentence regarding quantum physics.
Identified a subordinate clause ('Although... properties'), a main clause ('subsequent... hypothesis'), and a second main clause ('consequently... shift') correctly joined by a semicolon and comma.
Semicolons followed by conjunctive adverbs are valid structural links between independent clauses.
2
Evaluate the sentence on sociological studies and urbanization.
Found two independent clauses joined by a comma before the conjunctive adverb 'however'.
Conjunctive adverbs cannot join independent clauses with only a comma; doing so creates a comma splice.
3
Inspect the sentence on economic indicators and inflation rates.
Verified that the subordinate clause leads into a complete independent clause, which is correctly linked to another independent clause via a semicolon.
The sentence adheres to standard punctuation and clause boundaries.
4
Examine the sentence regarding historians and agrarian economy collapse.
Detected a subordinating conjunction ('Whereas') introducing a clause with no main clause following it.
A dependent clause left standing alone constitutes a sentence fragment.
5
Review the sentence concerning neuroscientists and neural pathways.
Observed two independent clauses merged with zero connecting punctuation or conjunctions.
Fusing two independent clauses without punctuation forms a run-on sentence.

Key Concept

Sentence Boundaries (Avoiding Fragments, Comma Splices, and Fused Sentences)
Estimated Time:2m 0s
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Topics

Sentence Fragments, Run-Ons, and Comma Splices

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