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When is the OA is excepted to be published for this ?
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To ensure the integrity of fossil evidence found at climatically unstable archeological sites, the immediate coating of newly exposed fossils with a specially formulated alkaline solution is as crucial, if not more crucial than, the prompt removal of the fossil from the site.


(A) crucial, if not more crucial than, the

(B) crucial as, if not more crucial than, the

(C) crucial as, if not more than the

(D) crucial, if not more crucial, than the

(E) crucial, if not more crucial, as the






OFFICIAL EXPLANATION



The correct answer is (B).

The original sentence suffers from faulty parallelism. Removing the second phrase of the comparison (set off by commas) reveals the omission of as (is as crucial . . . as). Choice (B) completes the form of the idiomatic phrase by including the word as.
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