Karen's father is an executive for a major international corporation and has been transferred to various countries over the years. With each move, Karen is enrolled in a new school. Even though English is spoken in the schools she attends, there are students from all over the world whose parents have jobs similar to Karen's father. With each new school, Karen spends the first few weeks merely observing the other students to learn which behaviors are appropriate in specific situations because she's learned that at each school the kids behave differently. Karen is attempting to learn that student body's specific regarding behavior.

D) norms

Explanation:

Norms are ACCEPTED ways of doing things in a society or social circle. It is usually internalized and with no need for reinforcement but sometimes can be reinforced through positive or negative sanctions.

It is important to learn the norms of a new social cycle as Karen is doing so as not to stick out or annoy the occupants of the social cycle.

When people say, "When in Rome, behave like the Romans", that is akin to saying that one should adopt the norms of the people in Rome whilst in Rome, or adopt the norms of the people of Alaska when in Alaska and so on.

a) which ethnic groups live in this community?

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the above statement/question is (true);