Question

    Parts of the following sentence have been given as

    options. One of them may contain an error. Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer. The reduced air pressure on airline flights can lessen the amount of oxygen in passengers' blood for twenty-five percent.
    A The reduced air pressure on airline flights Correct Answer Incorrect Answer
    B No error Correct Answer Incorrect Answer
    C in passengers' blood for twenty-five percent Correct Answer Incorrect Answer
    D can lessen the amount of oxygen Correct Answer Incorrect Answer

    Solution

    by will be used not for

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