Which sentence contains a fused (run-on) sentence error?

Answer and explanation

Correct answer: C. The battery cells overheated rapidly the cooling liquid had leaked from the pump.

  1. Step 1: A fused sentence occurs when two independent clauses are joined with neither punctuation nor coordinating conjunctions.
  2. Step 2: 'The battery cells overheated rapidly' and 'the cooling liquid had leaked' are two complete clauses jammed together without punctuation.
Answer
The battery cells overheated rapidly the cooling liquid had leaked from the pump.
Why not the others: The other options correctly punctuate the clauses with subordinating conjunctions, semicolons, or coordinating conjunctions.

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