I don't think it's a good idea to revise it for years - the topic might get irrelevant in the meantime!
Also getting it "right" the first time - or even the second time is not very likely, a more likely option is that it will need between 3 and 10 revisions. So I think the best option is <span>B. Work on it over a seven-day period and rewrite it at least twice.</span>
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Attacked is past tense and past participle is attacks
235,236,237,238,239,240,241,242,243,244
