Answer:
Prototype model.
Explanation:
Prototype model may be defined as the model in which the prototype first built. The prototype then tested and further reworked to until the acceptable outcome is achieved.
Dr. Brown has conducted the research. He has conducted the particular research, tests and then finally the outcome of the research. Here, Dr. Brown has used the prototype model and represent the research in people's mind through his research.
Thus, the correct answer is prototype model.
