Answer:
According to Piaget, Hannah has not yet attained the cognitive skills characteristic of the formal operational stage.
Step-by-step explanation:
According to Jean Piaget, there are four stages for our intellectual development: sensorimotor, preoperational, concrete operational, and formal operational.
The formal operational stage is the final and most advanced one. It begins at the age of 12 and lasts throughout our lives. At this stage, we become able to think about abstract concepts and theories, to connect and combine different ideas in our minds, and to solve problems by using logic. As we can see, Hannah does not yet possess those skills, which means she has not reached the formal operational stage.