environmentalists

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18. Many environmentalists believe that the widespread planting of trees, along with the conservation of existing forests, would be one of the surest, easiest, and least expensive ways to begin to halt or even to reverse the buildup of carbon dioxide in the air.
(A) one of the surest, easiest, and least expensive ways to begin to halt or even to reverse
(B) one of the most sure, easy, and least expensive ways to begin a halt or even reverse
(C) one of the surest, easiest, and least expensive ways that would begin halting or even reversing
(D) a most sure, easy, and inexpensive way beginning the halting and even reversing of
(E) the most sure, easiest, and inexpensive way that would begin halting or even reversing

A

[piyush_nitt]

18. Many environmentalists believe that the widespread planting of trees, along with the conservation of existing forests, would be one of the surest, easiest, and least expensive ways to begin to halt or even to reverse the buildup of carbon dioxide in the air.
(A) one of the surest, easiest, and least expensive ways to begin to halt or even to reverse
(B) one of the most sure, easy, and least expensive ways to begin a halt or even reverse
(C) one of the surest, easiest, and least expensive ways that would begin halting or even reversing
(D) a most sure, easy, and inexpensive way beginning the halting and even reversing of
(E) the most sure, easiest, and inexpensive way that would begin halting or even reversing

A

need superlative form for || ism

most sure or surest, least expensive and easiest

B , D , E OUT

C - that modifies ways instead of refering to planting of trees

OA A