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.
Usage of 'Dirty Energy', electricity generated by burning coal, which causes ten times environmental degradation as compared to hydro-electric power generation, caused Facebook to be targeted by Greenpeace, an environmental protection group.
Reveal answer
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