GMAT Sentence Correction (SC) | Re: Unlike frogs that metamorphose from tadpoles into adults within a one-

I'm not sure that there's a great answer to that, unfortunately. I think the GMAT might argue that the correct -- and more direct -- idiom is "take three years to accomplish a task", not "take three years until they accomplish a task." The latter is a mild waste of words, I guess, but I'm not 100% sure that it's wrong. In any case, idioms are,
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