Re: After naturally occurring smallpox was eradicated, the World Health Or
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30 Mar 2023, 15:13
You can start by finding word pairs to help narrow down the word choices.
eliminate - extirpate
preserve - retain
cultivate - duplicate
The key part of the sentence that gives us the answer is this: "that they might be later used in developing the means to combat other viruses."
Based on the context of the sentence it is easy to see how C. preserve and D. retain are the best answers.
Cultivate and duplicate don't fit because that would imply that they plan on using the virus samples immediately, not just holding onto them for future use like it is indicated in the sentence.