The theory that focuses specifically on the relationship between a child's stage of development and how the child thinks was developed (D) Piaget.
Step-by-step explanation:
According to the Jean Piaget's theory of cognitive development children's move through four different stages of mental development.
Piaget theory is based on the understanding of how children acquire knowledge about the world around them ,and it also involves understanding the nature of their intelligence.
He does not support the fact that intelligence is a fixed triat rather he advocate the fact that cognitive development is an outcome of biological maturation and interaction with the environment.