Becky Is 30 Months Old and Loves to Throw Things,especially

Multiple Choice

Becky is 30 months old and loves to throw things,especially balls.Becky's uncle finds Becky with her pet gerbil,Herman,in her hand.Becky was getting ready to throw Herman against the wall and said to her uncle,"Becky throw fuzzy ball!" How would Piaget explain Becky's behaviour?

A) She is using accommodation.
B) She has failed to use assimilation.
C) She is using assimilation.
D) She has failed to use object permanence.