Answer: Animism
Step-by-step explanation:
Animism is defined as belief that object, places, creatures and other things persist spirit or soul in them .Children tend to think that object is alive and has feelings or emotion like humans .Toys, dolls, teddy bears are the objects that can be inanimate by children.
According to the question, concept of animism is applied in the scenario where Olivia is blaming toy train for spilling milk and damaging her dress.She is in-animating her toy train by giving it a name and playing with it as if it is as human with feelings.