Literary agents estimate that more than half of all nonﬁction books credited to a celebrity or other public ﬁgure are in fact
written by ghostwriters, professional authors who are paid to write other ______ but whose names never appear on book
covers.
people’s stories
peoples story’s
peoples stories
people’s story’s
Choice A is the best answer. The convention being tested is the use of plural and possessive nouns. The plural possessive
noun “people’s” and the plural noun “stories” correctly indicate that there are multiple stories from multiple people. 
Choice B is incorrect because the context requires the plural possessive noun “people’s” and the plural noun “stories,” not the
plural noun “peoples” and the singular possessive noun “story’s.” Choice C is incorrect because the context requires the
plural possessive noun “people’s,” not the plural noun “peoples.” Choice D is incorrect because the context requires the plural
noun “stories,” not the singular possessive noun “story’s.”