Answer:
B) pretend play.
Explanation:
Pretend play may be defined as a form of a symbolic play where the young children or babies uses objects such as dolls or stuffed animals to represent some other objects or characters using their imaginations and assign them roles to inanimate people and carry conversation with them.
This is a kind of play that babies usually play with their toys and dolls.
In the context, a two and half year old child Cassi is playing with her dolls and she tries to carry a conversation with them is a form of pretend play.