ankur55 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
This question is based on Construction and Idiomatic Usage.
“The effects that are the most obvious ones” is wordy. The participle ‘impacting’ should not be followed by the preposition ‘on’. The noun form ‘impact’ should be followed by ‘on’, but not the participle. The correct usage would be ‘impacting people’. So,
Option B can be ruled out.
The phrase “what are the most obvious effects” is awkward and redundant. This option also conveys the meaning that
effects are the most obvious
effects. So, there is an unnecessary repetition of the word ‘effects’. So,
Option C can also be ruled out.
Option D is made up of two subordinate clauses one after the other –
that extremes of temperature, precipitation, and storminess, the most obvious effects,
that they would have the largest impact on people. This placement leaves the sentence incomplete because there is no verb to complete the idea of the subject “extremes of temperature, precipitation, and storminess”. So,
Option D can also be ruled out.
When ‘impact’ is used as a verb, it should not be followed by the preposition ‘on’. The relative pronoun ‘which’ does not have a clear antecedent. So,
Option E can also be ruled out.
Option A contains a subject followed by a modifier -
the most obvious effects, and
those that would have the largest impact on people,
would be extremes of temperature, precipitation, and storminess. This is followed by the verb ‘would’, which indicates the probability of the effects. In Option A, ‘impact’ is used as a noun so it should be followed by the preposition ‘on’.
Therefore, A is the most appropriate option.Jayanthi Kumar.