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English Sentence Correction QUESTION #4901
Question 1
A little under a million years ago, the briny waters of the Baltic Sea began flooding into the cold North Atlantic: geologists are still debating _____ gradual or cataclysmic.
  • whether the flood was gradual or created a cataclysm
  • if the flood was gradual or created a cataclysm
  • about whether the flood was gradual or cataclysmic
  • whether the flood was gradual or cataclysmic✔️
Correct Answer Explanation
It maintains clean parallel adjective structure: 'gradual or cataclysmic.' Option A breaks parallelism by pairing adjective 'gradual' with verb phrase 'created a cataclysm.' Option B misuses 'if' in an indirect question. Option C adds a superfluous 'about.' Option E is redundant.