Assess the learner's ability to create a comprehensive, multi-level (individual, interpersonal, environmental, policy) intervention and rigorous evaluation protocol to reduce sedentary behavior and improve cardiometabolic health in older adults. The quiz tests integration of behavior-change theory, sensor-based wearable measurement, implementation science frameworks (fidelity, reach, adoption), randomized trial design with sample size/power calculations and statistical plans, process and outcome evaluation, cost-effectiveness analysis, and health equity considerations for dissemination.