Assess learners' ability to analyze common contributors to poor indoor air quality (IAQ) in office buildings — including ventilation effectiveness, HVAC operation and maintenance, building materials and furnishings, occupant activities, moisture/mold, and outdoor pollutant infiltration — by interpreting basic IAQ metrics (CO2, PM2.5, VOCs, humidity), identifying root causes from monitoring data, prioritizing risks, and recommending practical engineering, administrative, and behavioral interventions with feasibility and cost-effectiveness considerations for professional practice.