Answer:
C. has reached, at least, the concrete operational stage.
Explanation:
At the concrete operations stage(about 7-11 years old), the child develops the ability to weigh, measure and calculate amounts accurately.
At this point it is difficult to deceive the child by pouring milk from a short, fat glass into a tall, thin one.
The change in the shape of the glass can no longer fool the Simone hence the request for more milk.
