Answer:
C. Factorial Design
Explanation:
Factorial design is correct because the study can be done with keeping weight as the central idea for the study of objective and wearing the parameters such as walking and Mediterranean diet effects and their outcome.
Pre-test only design is incorrect as design of the measurement of the readings are taken before the interventions and implemented and in this case the effect of walking and Mediterranean diet will be monitored through this study and even after the study.
Cohort study design is incorrect because cross-sectional intervals are measured and at the same time there is common characteristics to be shared which is not applicable in this case.
Repeated Measures is incorrect and the design is not appropriate for the study.
