Assess the ability to apply established behavior change theories and frameworks (e.g., Social Cognitive Theory, Transtheoretical Model, COM-B, Theory of Planned Behavior, Self-Determination Theory) to design a community-based physical activity intervention for sedentary adults. Items will require selecting and justifying theory-driven targets, mapping determinants to appropriate behavior change techniques, outlining co-design and recruitment/retention strategies for diverse communities, specifying measurable outcomes and process evaluation methods, and addressing feasibility, scalability, and equity considerations within implementation plans.