The error is a common spelling mistake and homophone confusion.
People often confuse "role" and "roll" because they are homophones—words that sound the same but have different meanings and spellings. In the context of "roll call," the word "roll" refers to rolling up a list of names to call out, but this is confused with "role," which means a character or part played by a person.
The correct phrase is "roll call." It refers to the process of calling out a list of names to check who is present.
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