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MediumStandard English Conventions

Nine months before Rosa Parks made history by refusing to comply with the segregated seating policy on a Montgomery, Alabama, bus, a fifteen-year-old Montgomery girl named Claudette Colvin was arrested for the same to some historians, Colvin’s arrest led to Parks’s action and eventually to the desegregation of Montgomery’s bus system.

Which choice completes the text so that it conforms to the conventions of Standard English?