Garry pours a glass of milk for his daughter, Simone. Simone wants more, so Garry pours the milk from a short, fat glass into a tall, thin one. Simone is not amused and asks for more milk. Obviously, Simone:

A) is able to reason abstractly.
B) has reached, at least, the preoperational stage.
C) has reached, at least, the formal operational stage.
D) has reached, at least, the concrete operational stage.

Concrete Operational Stage

A phase in Piaget's theory of cognitive development where children gain the ability to think logically about concrete events.

Preoperational Stage

A developmental stage, identified by Jean Piaget, where children aged 2-7 years think symbolically but are not yet logical.

Formal Operational Stage

An advanced stage in cognitive development, according to Piaget, marked by the ability to think logically about abstract propositions and hypothetical situations.