Which of These Situations Is Not an Example of a Child

Which of these situations is not an example of a child learning gender differences by imitation?

A) A young boy learns to use the toilet by watching his father.
B) A young girl learns to cook by watching her mother.
C) Girls in a group of children pay more attention to the behavior of other girls than to that of boys.
D) Children watching videos pay more attention to same-sex characters than to opposite-sex characters.
E) Children who speak languages that differentiate words by sex (French, Hebrew) are more conscious of their own sex than those who speak languages that do not specify sex (Finnish, English) .