Piaget's development psychology is concerned with :

Correct option is B

Jean Piaget’s developmental psychology primarily focuses on cognitive development. He proposed that cognitive abilities develop in stages as children interact with their environment. Piaget’s theory outlines four key stages: the Sensorimotor, Preoperational, Concrete Operational, and Formal Operational stages. Each stage marks significant changes in how children think and process information.
Information Booster:
1. Piaget emphasized the role of schemas in cognitive development.
2. Learning occurs through assimilation and accommodation.
3. He highlighted that cognitive development is an active process.
4. His theory influenced educational practices worldwide.
5. Cognitive development is distinct from emotional or social development.
Additional Knowledge:
 Social development (a): Refers to how individuals develop social skills and relationships.
 Emotional development (c): Involves understanding and managing emotions.
 Moral development (d): Focuses on how individuals develop a sense of right and wrong.
Piaget’s theory paved the way for understanding how knowledge acquisition evolves, particularly in childhood.