Marcus is a 4-year-old. Which of the following behaviors displayed by him is different from the typical psychosocial developments observed in the infancy and toddlerhood period of human development?

A. Marcus is extremely resistant to interacting with other children of his age.
B. Marcus likes to select his toys by himself.
C. Marcus is fond of his parents and spends most of his time playing with them.
D. Marcus uses his name to refer to himself.

Answer: A