Answer: Pre-operational stage
Explanation:
Pre-operational stage of cognitive development is the stage in which children tend to use symbols and signs for indications without able to use cognitive functions.Children display images, thoughts, statement ,words etc through symbols and are indulged in pretend play.
According to the question,Veronica is in pre-operational stage of cognitive development were she is able to use symbols for indicating her ideas and in-animating things for pretend play but she is not using cognitive operations yet.