The+Nature+of+Error

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The Nature of Error From Black Quarterbacks in the NFL “Are black quarterbacks getting enough playing time in the NFL? I think they do, but other people think that white Quarterbacks play a lot more often. I wonder why people think this? It may be a prejudice thing, but I really doubt that, or __it’s the coaches that work them hard but don’t put them in until they absolutely need to, or people watch there favorite team on TV or whatever and the Quarterbacks are white.”__

Would you consider the underlined passage an example of: a) developmental error b) rhetorical error or  c) dialectical error?   What part of the sentence is what kind of error?