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    Question

    "The scientist’s groundbreaking research on renewable

    energy sources was hailed as a major _______ in the field of environmental science." Select the most appropriate word to fill in the blank:
    A failure Correct Answer Incorrect Answer
    B routine Correct Answer Incorrect Answer
    C discovery Correct Answer Incorrect Answer
    D obstacle Correct Answer Incorrect Answer

    Solution

    " Discovery " is the most appropriate word to fill in the blank as it denotes a significant finding or breakthrough, which aligns with the context of a major advancement in the field of environmental science.

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