Answer:
Comparative research
Explanation:
Comparative research: The term comparative research is defined as one of the research methods in the field of social sciences that focuses on making comparisons among distinct cultures and countries. Its main focus is to identify or encounter differences and similarities between various social entities including societies, nations, institutions, and cultures, etc.
It is responsible for enhancing or increasing an individual's awareness and understanding of social entities. The comparative research is considered as a quantitative research.
In the question above, Max's research would be best described as comparative research.