Assess students' ability to apply life-cycle assessment (LCA) and basic cost-benefit analysis (CBA) to compare the sustainability of single-use versus reusable food packaging for a mid-sized university cafeteria. The quiz will test setting appropriate functional units and system boundaries; identifying and quantifying key life-cycle stages (materials, production, transport, use, cleaning, end-of-life); estimating environmental indicators (GHG emissions, energy, water, waste) and economic factors (purchase, cleaning, labor, disposal, avoided waste); performing simple break-even and sensitivity calculations using given data and assumptions; and interpreting results to form clear, evidence-based operational or policy recommendations for the university context.