Concept:Jean Piaget viewed cognitive development as an active process where children adapt to their environment by modifying their mental schemas.
Explanation:Piaget proposed that children build knowledge through assimilation (fitting new information into existing schemas) and accommodation (changing schemas to include new information).
This process of adaptation is central to cognitive growth.
Option A is wrong because development is not simple fact addition; it involves restructuring schemas.
Option B is incorrect; Piaget argued cognitive development precedes language, not the reverse.
Option C aligns with Vygotsky’s cultural tools theory, not Piaget’s individual adaptation model.
Option D correctly captures Piaget’s idea: cognitive development is adaptation by changing one’s schemas.
Answer:D. is the process of adaptation to the environment by changing one's schemas.