Gianni watches as a researcher placed five toy dogs and three toy cats on a table.When the researcher asks Gianni if there are more dogs or more animals,Gianni correctly answers more animals.Which of the following operations does Gianni seem to understand,based on this answer

A)  centration
B)  conservation 
C)  hierarchical classification
D)  object permanence

Hierarchical Classification

An organizational system where items are ranked and categorized based on levels or degrees of importance or inclusiveness.

Conservation

The principle in cognitive development that certain properties of an object, such as volume or mass, remain the same despite changes in its form or arrangement.

Centration

A cognitive limitation in early childhood where a child focuses on one aspect of a situation or object, neglecting other relevant aspects.