Direction: In the following questions, some parts of the sentences have errors and some are correct. Find out which part of a sentence has an error. The number of that part is the answer. If a sentence is free from error, your answer is (4) i.e. No error.
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The ruins of the spillway are a vital clue to the epic struggle that unfold as generations of Khmer engineers coped with a water system that grew complex and unruly.
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- coped with a water system that grew complex and unruly.
- to the epic struggle that unfold as generations of Khmer engineers
- The ruins of the spillway are a vital clue
- No error
Correct Option: B
Here, to the epic struggle that unfolds .... as generations of khmer engineers is the right usage
