DrAhmed, an Epidemiological Researcher, Is Studying the Psychological Experiences of the Residents

Dr.Ahmed, an epidemiological researcher, is studying the psychological experiences of the residents of Fort McMurray, Alberta, following the devastating fire that engulfed the town.What research method is Dr.Ahmed most likely using?

A) the experiment
B) the longitudinal study
C) the correlational model
D) the case study