Question

an 89 - year - old man has smoked two packs of cigarettes a day for more than 60 years and is in excellent health. a researcher does an in - depth study of this man in hopes of revealing universal principles related to the effects of smoking on health. however, the study may not provide useful results because the man is atypical. this illustrates a weakness of which method of descriptive research? replication survey case study experiment

Explanation:

The scenario describes an in-depth study of a single atypical individual, which is characteristic of a case study. A key weakness of case studies is limited generalizability due to reliance on unique cases.

Answer:

C. case study