Text stimulus (data-display): Vertical funnel titled 'Rental-Assistance Online Application.' Stages and counts: Information page viewed 1,000; Application started 400; Application submitted 120; Application approved 90. Beside the 'Application started' to 'Application submitted' segment, add a callout reading 'Interview theme: difficulty scanning and uploading required documents.' Display details: proportional funnel widths. Use the rental-assistance application funnel and interview note. At which stage should the agency focus its first redesign?