Directions: This question presents a sentence, all or part of which is underlined. Beneath the sentence you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.
Using the techniques employed by genetic engineering, a new species of microorganism has been developed by laboratory scientists to aid in cleaning up oil spills by digesting the oil.
Reveal answer
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