According to Jean Piaget, cognitive development :

Correct Answer: is the process of adaption to the environment by changing one’s schemas.

Explanation:

According to Jean Piaget's theory of cognitive development, children construct an understanding of the world around them through continuous interaction with their environment.

Key concepts in Piaget's theory include:

1. Schemas: Mental structures or frameworks that help individuals organize and interpret information about the world.

2. Adaptation: The process of adjusting to new environmental demands, which involves two complementary processes:

- Assimilation: Fitting new information into existing cognitive schemas.

- Accommodation: Modifying existing schemas or creating new ones when new information or experiences cannot fit into existing schemas.

3. Equilibration: The state of cognitive balance achieved when a child's schemas can adequately deal with environmental information through assimilation and accommodation.

Therefore, cognitive development is fundamentally the process of adaptation to the environment by constantly updating and changing one’s schemas.