GRE Text Completion Question 613

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Source: XDF

A sizable diminution in level of ozone in the atmosphere was detected over Antarctica in 1985,_____scientists who had issued warnings in the early 1970s that chlorofluorocarbons and other types of industrial chemicals might cause a reaction which would deplete ozone in the upper atmosphere.

  • A undermining
  • B admonishing
  • C vindicating
  • D surprising
  • E critiquing

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