Poor relationship with parents is associated with earlier sexual activity among teens

Which of the following can lead to children's temperament changing over time?

A) siblings are born B) adaptations to their environment C) parents die D) they remain immature

The words groovy, awesome, phat, nerd, and poser are all used in your text as examples of

A) the adolescent register. B) metalinguistic awareness. C) adolescent phonemic awareness. D) syntactic bootstrapping.