What does excretory do in the human body

Which stage of stress includes the fight or flight response?

Christine, a three-year-old child, often wears her mother’s shoes and carries her bag while pretending that she is going shopping. sometimes christine copies her mother in the kitchen by stirring in empty pots. which type of developmental change is christine experiencing? a- social and emotional b- psychological c- physical d- cognitive

Does anyone have an answer to this question? if so me.