Answer:
Concrete Operational stage
Step-by-step explanation:
The concrete operational stage represents the third stage in the cognitive development theory of Piaget. This period covers the length of middle childhood ,it starts about 7 years old and lasts until around 11 years old and is marked by the growth of critical thinking. This is the time of life when children start mental surgery, when you control the universe from your mind to resolve issues.
The child makes use logic to solve problems related to his or her own personal experience but has difficulty resolving hypothetical issues or addressing increasingly complex issues.