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Question is

Some parts of the sentences have errors and some are correct. Find out which part of a sentence has an error and corresponding to the appropriate correction option. If a sentence is free from error, corresponding to 'No error' option.

A study is going underway to determine the exact concentration of lead in the water supply.


  • to determine the exact concentration

  • A study is going underway

  • of lead in the water supply

  • No error

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