Bobby Is 3 Years Old and in the Pre-Operational State

Multiple Choice

Bobby is 3 years old and in the pre-operational state. He is speaking in complete sentences and picking up on the grammar of his native language. Which is the following statement is consistent with Piaget's theory?

A) Bobby's learning is delayed because he does not know 500 words.
B) Bobby's current understanding of language builds upon his previous basic learning of language from the sensorimotor stage.
C) Bobby will be delayed in entering the concrete operational stage because at age 3 he should be able to participate in conversations with other children.
D) Bobby does not have object permanence.