New RBI Grade B 2025 Notification will come Soon! Enroll Here

    Question

     Fill in the blanks with appropriate words/phrases

    from the options. The association of 226 viruses responsible for zoonotic diseases ______________ by the researchers and more than 800 mammal species _____________ by them.
    A had surveyed, had been distinguished Correct Answer Incorrect Answer
    B had been surveyed, had been distinguished Correct Answer Incorrect Answer
    C had been surveyed, had distinguished Correct Answer Incorrect Answer
    D has being surveyed, has being distinguished Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Only option B is grammatically correct. The association of 226 viruses responsible for zoonotic diseases had been surveyed by the researchers and more than 800 mammal species had been distinguished by them.

    Practice Next

    Relevant for Exams: