Question

    The following sentence has been split into four segments.

    Identify the segment that contains a grammatical error. He doesn’t know / how to solve / the complicating problem / given by the teacher.
    A He doesn’t know Correct Answer Incorrect Answer
    B how to solve Correct Answer Incorrect Answer
    C the complicating problem Correct Answer Incorrect Answer
    D given by the teacher Correct Answer Incorrect Answer

    Solution

    The word "complicating" is incorrect here because it is a present participle (verb form) and doesn’t fit as an adjective describing the noun "problem."
    The correct adjective should be "complicated," which means difficult or complex.
    So, the correct phrase is "the complicated problem."

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