Assess environmental, economic, and social trade-offs of converting a vacant city lot into either a public park or affordable housing. Students should evaluate ecological benefits (biodiversity, stormwater management), economic factors (construction/maintenance costs, funding, property values), social impacts (housing need, access to recreation, equity, displacement), short- and long-term effects, and stakeholder perspectives; then recommend the best option using evidence-based criteria and justify the decision with data or clearly stated assumptions.