Martina Is a Preschooler and Her Mother Wonders Whether She

Martina is a preschooler and her mother wonders whether she has psychological problems because she talks to herself constantly.Because you are taking a course in developmental psychology, she asks you if she should be concerned by Martina's behaviour.Based your knowledge from this course, how would you explain Martina's behaviour to her mother?

A) Martina is displaying cognitive immaturity and she will grow out of this behaviour.
B) Martina is likely developmentally delayed.
C) Martina is displaying cognitive competence and she should be encouraged.
D) Martina is not receiving enough social stimulation.