Tremal, 20 Months, Recently Started Using First-Person Pronouns

Multiple Choice

Tremal, 20 months, recently started using first-person pronouns. His mother is somewhat concerned that Tremal constantly asserts his rights to objects, shouting, "Mine!" Even when playing with his brother, Tremal doesn't want to share toys, instead insisting that everything is "mine." What does Tremal's behavior show about his emotional development?

A) Tremal has developed a sense of self-awareness.
B) Tremal's anxiety has become a source of anger.
C) Tremal is being selfish and his mother needs to discipline him.
D) Tremal is trying to establish that he is the "boss" at home.