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    Question

    Read the following sentence to find out whether there is

    any grammatical mistake/error or idiomatic error in it. The error, if any, will be in one part of the sentence. Mark the number of that part with error as your answer. If there is no error, mark 'No error'. (Ignore errors of punctuation, if any)
    A While the rate of electricity generated from Correct Answer Incorrect Answer
    B renewable sources has increased over Correct Answer Incorrect Answer
    C the years, more needs to Correct Answer Incorrect Answer
    D be done for its adoption. Correct Answer Incorrect Answer
    E No error Correct Answer Incorrect Answer

    Solution

    In part D, the pronoun used should refer to 'renewable sources' and not 'rate of electricity', as the latter cannot be 'adopted'. So, 'their' is the correct word to be used. Option D is the right answer.

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