Answer :
The correct answer is:
a) Jean Piaget
Explanation:
1. A paradigm is understood as the set of beliefs, values, techniques, and procedures shared by a scientific community at a specific historical moment to define problems and seek solutions.
2. In this context, Jean Piaget is a renowned psychologist known for his work on child development and cognitive theory. His theories and research have influenced the field of psychology and education, contributing to the understanding of how individuals learn and develop.
3. While the other options are notable figures in their respective fields, they are not directly associated with the concept of a paradigm as described in the question.