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निम्नलिखित में से कौन सा विकल्प इस पाठ को पूरा करता है ताकि यह मानक अंग्रेजी के व्याकरण नियमों के अनुकूल हो? Working from an earlier discovery of Charpentier's, chemists Emmanuelle Charpentier and Jennifer Doudna-winners of the 2020 Nobel Prize in Chemistry-re-created and then reprogrammed the so-called 'genetic scissors' of a species of DNA-cleaving bacteria ______ a tool that is revolutionizing the field of gene technology.