Sentence Correction

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 of temperature, precipitation, and storminess, would be those impacting the most on people

C. those effects to have the largest impact on people, extremes of temperature, precipitation, and storminess, are what are the most obvious effects

D. extremes of temperature, precipitation, and storminess, the most obvious effects, that they would have the largest impact on people

E. extremes of temperature, precipitation, and storminess, which are the most obvious effects, are those to impact the most on people

the answer is C, please explain~~thx

sangyeyoyo wrote: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 of temperature, precipitation, and storminess, would be those impacting the most on people

C. those effects to have the largest impact on people, extremes of temperature, precipitation, and storminess, are what are the most obvious effects

D. extremes of temperature, precipitation, and storminess, the most obvious effects, that they would have the largest impact on people

E. extremes of temperature, precipitation, and storminess, which are the most obvious effects, are those to impact the most on people

the answer is C, please explain~~thx

IMO C
are you joking ??

sangyeyoyo wrote: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 of temperature, precipitation, and storminess, would be those impacting the most on people

C. those effects to have the largest impact on people, extremes of temperature, precipitation, and storminess, are what are the most obvious effects

D. extremes of temperature, precipitation, and storminess, the most obvious effects, that they would have the largest impact on people

E. extremes of temperature, precipitation, and storminess, which are the most obvious effects, are those to impact the most on people

the answer is C, please explain~~thx

IMO is A. Subjunctive should be used in this sentence. So we can rule out C&E. B&D are obviously wrong. The most logical and grammatically right choice is A.