The correct answer to this open question is the following.
First blank: variable. Second blank: liberal. Third blank: southern.
Chester’s working self-concept is variable when he finds himself around different people. When he is with his conservative family, he describes himself as liberal, but when he is with his friends from his tennis team, he describes himself as southern.
We are talking about the sociological term of "self-concept" which means the way we perceive ourselves in different situations or conditions, including the way we behave with different people. This is part of our personal identity, that is forged with our behavior on a daily basis. Some authors also refer to social identity, that is the one that we show when we interact with a specific social group that could be friends, relatives, or co-workers.