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Which of the following is a boundary violation of children’s informal gender segregation rules?
A) a teacher creates mixed gender groups for a science lesson
B) a boy takes a girl’s Barbie lunch box, runs away with it to make her chase him, and then gives it back to her
C) girls play together because they tend to enjoy the same activities
What is B) a boy takes a girl's Barbie lunch box, runs away with it to make her chase him, and then gives it back to her