Which is the best strategy to follow when you write a report or an essay?
a. revise it over and over for at least three or four years.
b. work on it over a seven-day period and rewrite it at least twice.
c. get it right the first time and put it aside until it's due.
d. write it in one sitting and revise it only once.

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 B. Work on it over a seven-day period and rewrite it at least twice.