GMAT Sentence Correction (SC) | Re: Discussion of greenhouse effects has usually focused on

Discussion of greenhouse effects has usually focused on whether the
Earth would warm and by how much, but climatologists have indicated all
along that the most obvious effects, and those that would have the largest
impact on people, would be extremes of temperature, precipitation,
and storminess.
A. the most obvious effects, and those that would have the largest
impact on people, would be extremes of temperature,
precipitation, and storminess
B. the effects that are the most obvious ones, extremes
...

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