The correct answer is letter A.
According to Piaget, children play an active role in the construction of their knowledge, so that the term constructivism is very prominent in their work.
Cognitive development, which is the basis of learning, takes place through assimilation and accommodation.
When in assimilation, the mind does not change.
When a person cannot assimilate a situation, two processes can occur: the mind gives up or changes.
If modified, then accommodation occurs, leading to the construction of new assimilation schemes and resulting in the process of cognitive development.