Kids at this stage understand that if you break a candy into smaller pieces it will be the same amount as when the candy was whole. Identify the stage.

Correct option is D

The correct answer is (d) Concrete operational stage
Explanation:
In the Concrete Operational stage (ages 7–11), children develop the concept of 'conservation.' This is the logical understanding that the quantity or amount of a substance remains the same even if its physical appearance or shape changes.
Information Booster:
● Conservation: The realization that properties like mass, volume, and number are invariant despite transformations in form.
● Logical Thought: Children begin to use inductive logic, moving from specific experiences to general principles.
● Reversibility: The ability to mentally reverse an action, such as understanding that broken candy can be put back together.
● Decentration: The child can focus on multiple aspects of a situation (e.g., length and width) rather than just one.
● Concrete Focus: Reasoning is applied only to physical or 'concrete' objects that are present and observable.
Additional Points:
● Option (a): Centration – Pre-operational children are fooled by appearance and would think the smaller pieces represent 'more' or 'less'.
● Option (b): Sensation – Sensory motor infants do not have the cognitive framework to understand quantity or conservation.
● Option (c): Advanced abstract – While formal operational thinkers understand conservation, they have moved beyond it to abstract theories.

So the correct answer is (d)