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Which of the following best explains why the author chose the compare-and-contrast structure for paragraph 2

Ais a group of individuals of the same that exist in the same place at the same time

Which revision, if any, best fixes the bolded (capitalized in this case) part of the sentence? female cardinals, a somewhat drab bird compared to the males, blend in well with their environment. no change somewhat drab birds a somewhat drab's bird somewhat drab bird's