MEANING
Even their most ardent champions concede
that no less than a technical or scientific breakthrough is necessary before solar cells can meet the goal of providing one percent of the nation’s energy needs.
(A) that no less than a technical or scientific breakthrough is necessary
---- Incorrect because of redundancy. "No less" and "necessary" are redundant. (B) that nothing other than a technical or scientific breakthrough is needed
------ Incorrect meaning and wordiness.(C) that a technical or scientific breakthrough is necessary -
----- Correct. Precise and to the point. (D) the necessity for an occurrence of a technical or scientific breakthrough
------ "concede the necessity" is wordy. Too many prepositional phrases. (E) the necessity for a technical or scientific breakthrough occurring
------ "concede the necessity" is wordy. Too many prepositional phrases.
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GMAT Elimination System: "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."
GMAT Motivation: "The GMAT never sleeps. She waits in bed for you, one eye open. And if you are not careful, one day you wake up and she's gone."
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