I have five minutes to solve this question

Mr. Ahmed is much interested to study about the perception of the customers for purchasing a particular product. He further wants to investigate the factors which determine the buying behaviour of customers. In order to refine his research idea and finalize the topic, he may use different thinking techniques. Question: Discuss any one thinking technique frequently used for generating and refining the research idea (discuss at least four points related to the selected technique). (4 Marks)