Chris is curious about how long different insects can live under extreme heat conditions. He decides to place insects in a heated oven and study how long it takes for them to stop moving. Would Chris’s statistical question best be answered by an observational study?
A. No, an observational study would not be best because the study is not ethical.
B. No, an observational study would not be best because the sample is not representative of the overall population.
C. Yes, an observational study would be best because Chris is applying a treatment to the sample.