Starting in February and ending sometime in late April, department stores promote the fact that they stock a wide range of formal attire for high school proms. The dresses and tuxedos are available year-round, but the heaviest promotion of these products occurs in spring, when most proms are held. This spring promotion to high school students is based primarily on .

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true.b) some other scientific experts read the papers and provide quality control by eliminating many mistakes.c) an editor reads the papers, to make sure that all the semicolons are in the correct places.d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog.e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.