1b. (3 points) Review section 1.5, pages 17-19, in your textbook. Apply this information to what you learned in Part la by answering the following question. What type of study did
Dan Buettner and his research team use to identify the Blue Zones? (Hint: was it a double
blind study, epidemiological study, case control study, or animal model?) Use the
information from the text to describe the research method used by Buettner and his
team.