Answer:
Animism which is a sub-stage of preoperational stage
Step-by-step explanation:
The preopperational stage is part of cognitive development that will begin around the second year to the seventh or eighth year of life.
In this example little Lizzy is pretending that the rocks have thoughts, feelings and human intent. This is called animism.
In this stage the children believes that all the things in nature has human consciousness and human purposes.