Assess learners' ability to design a comprehensive sustainable circular-economy business model for a mid-sized manufacturing firm transitioning from linear production. The quiz will evaluate competency in identifying and justifying revenue streams (e.g., product-as-a-service, remanufacturing, resale, materials recovery), specifying reverse logistics and take-back systems, mapping cost structure and lifecycle costing, selecting financing options (green bonds, leasing, impact investors, grants), ensuring regulatory compliance (EPR, product standards, reporting), and defining measurable KPIs (material circularity, return rate, LCA metrics, cost/ROI). Questions require strategic rationale, quantitative estimates, and alignment with policy and market constraints.