content area top Part 1 Determine whether the study depicts an observational study or an experiment. Obese adults are randomly divided into two groups. One group replaces one meal a day with vegetables; the other does cardio for 30 minutes a day. After 3 months comma each group is weighed to compare weight loss. nothing nothing nothing Question content area bottom Part 1 Choose the correct description of the study. A. The study is an observational study because the researchers control one variable to determine the effect on the response variable. B. The study is an observational study because the study examines individuals in a sample, but does not try to influence the variable of interest. C. The study is an experiment because the researchers control one variable to determine the effect on the response variable. D. The study is an experiment because the study examines individuals in a sample, but does not try to influence the variable of interest