Marshall, who is not from ethnic group a, thinks that all people in ethnic group a behave the same and have the same attitudes. marshall's thinking illustrates

I am not certian on the context of this question. This feels like the sort of question that needs the assistance of vocab notes you may have been provided to accurately answer.

That said, some possible answers are ...

- Broad Generalization

- Biased Observation

- Explicit Prejudice