Respuesta :
Answer:
The correct answer is letter "C": Structured/natural.
Explanation:
Structured research is the type of study that evaluates subjects based on a set of questions or tasks. All subjects studied are tested with the same set of questions being the purpose of the analysis comparing the different behaviors of different individuals over a certain matter. Surveys are examples of structured research.
Natural research takes place by observing subjects in the original place where the topic of study happens. Therefore, Jason's research combines structured research and natural research by studying the impact of atmosphere and environment in a restaurant observing people in different restaurants using a checklist.