ExplanationThe military is using anodyne phrases to gloss reality, so a word that means something like euphemisms or unclear statements. Both elucidation and dysphemisms are nearly the opposite of what you’re looking for, so eliminate choices (A) and (F).
Neither prevarication, which means untruth, nor hyperbole, which means exaggeration, is supported by the sentence, so eliminate choices (C) and (E). Both periphrasis and circumlocutions can mean unclear statements, so choices (B) and (D) give you appropriate, equivalent sentences.
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