Question

    This question consists of a sentence which is divided into

    four parts numbered (1) to (4). Only one part of the sentence is not acceptable in standard written English. Identify that part which contains an error.
    A Knowledge have created opportunities Correct Answer Incorrect Answer
    B for the development of Correct Answer Incorrect Answer
    C multiple vaccines which are Correct Answer Incorrect Answer
    D advancing through clinical trials. Correct Answer Incorrect Answer

    Solution

    The subject "Knowledge" is a singular noun, so it should be followed by the singular verb "has" instead of "have."

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