During which stage of cognitive development do children acquire the semiotic function?

Nitrous oxide ("laughing gas") is a Schedule I controlled substance

Indicate whether the statement is true or false

One explanation of the greater identification with the majority culture by minority adolescents whose parents are immigrants is that they

A) are more likely to subscribe to the multicultural society model of United States culture. B) have low levels of self-esteem. C) are more likely to support the view of America as a "melting pot" where all are welcome. D) are more likely to subscribe to the pluralistic society model of United States culture.