Concept:Piaget’s theory explains how children’s thinking changes in predictable stages as they grow.
Explanation:Jean Piaget, a Swiss psychologist, systematically studied how children acquire knowledge and understand the world.
He observed his own children and concluded that cognitive development happens through interaction with the environment.
His theory is divided into four major stages: sensorimotor, pre-operational, concrete operational, and formal operational.
In the sensorimotor stage (0–2 years), infants learn through senses and develop object permanence.
In the pre-operational stage (2–7 years), children use language and symbols but think egocentrically.
In the concrete operational stage (7–11 years), they think logically about concrete events and master conservation.
In the formal operational stage (11+ years), they reason abstractly and hypothetically.
Piaget’s focus is on the growth of reasoning and intelligence, not on language, sexual, or social development.
Answer:C. Cognitive development