Which cognitive development stage follows the sensory motor stage according to Piaget?

The correct answer is the preoperational stage. This is the stage that follows the sensory motor stage in Jean Piaget's theory of cognitive development. The sensory motor stage, which occurs from birth to about two years of age, is characterized by children exploring the world through their senses and actions, building their understanding of their environment through direct interactions.

After this stage, the preoperational stage emerges, lasting from approximately ages two to seven. During this period, children begin to engage in symbolic play and are able to represent objects with words and images. They develop memory and imagination, which are critical for learning but still struggle with logic and taking the perspective of others. This enhancement of cognitive abilities marks a significant transition from the primarily physical interactions with the world in the sensory motor stage to more complex mental processes.

The other stages mentioned in the options are either incorrect or do not directly follow the sensory motor stage according to Piaget’s theory. The conventional stage is not a recognized phase in Piaget’s framework, while the formal operational stage comes after the concrete operational stage, which follows the preoperational stage. The developmental stage is too vague and doesn't refer to a specific phase in Piaget’s developmental stages.