SC - 1000 - #972

[f2001290]

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

Why A and not C? Please explain

[rajesh_ctm]

ways to begin to halt is more direct. ways that would begin halting unnecessarily uses indirect form.
-ing form is usually less preferable in GMAT if a direct form alternative is available.

[BTGmoderatorRO]

Option A.
This is the correct answer.
This option puts up correct parallelism and nice verb tenses.

Option B
This option is incorrect because of the use of 'most sure' it is important to know that 'sure' has its superlative and comparative forms. This can be used as sure, surer and surest. therefore this option is incorrect.

Option C.
'THAT WOULD BEGIN HALTING'
wrong words usage and does not follow proper parallelism

Option D
'most sure' this option suffers same fate as option B

Option E.
This option is incorrect. The words do not follow proper parallelism