Olivia Sue understands that objects maintain their weight and volume after changes in shape. But she has trouble answering abstract or hypothetical questions. She is in which of Piaget's stages?

A) formal operations
B) sensorimotor
C) concrete operations
D) preoperational

Formal Operations

The final stage of cognitive development (according to Piaget), characterized by the ability to think abstractly, logically, and systematically.

Concrete Operations

A stage in Piaget's theory of cognitive development where children gain the ability for logical thought about concrete objects and situations, typically occurring between 7 and 11 years of age.

Hypothetical Questions

Questions about situations that are not real but are posed for discussion or consideration of potential outcomes.