Respuesta :
I think the right answer is "which they reach a certain age." Jean Piaget is a psychologist who studied human development. According to his theory, human development is divided into stages, these stages are achieved due to cognitive maturation during the first years of life. Each stage of development is characterized by more specialized skills, behaviors, and cognitive skills.
I hope my answer can help you.
I hope my answer can help you.
According to Piaget, Cognitive development in children is a characteristic of an invariant sequence in stages that are reached at different ages.
What did Piaget say?
Piaget came up with the Theory of Cognitive Development which showed that children reach different stages of cognitive development based on their age.
From birth to the age of two for instance, children will be learning about objects and people from the actions they perform on those objects.
Find out more on Piaget's theory of cognitive development at https://brainly.com/question/9741540.