A (A homepage widget to quickly launch common processes.); D (A widget to aggregate complex data models for..). This is the lowest-customization answer that still satisfies the business, security, and lifecycle requirements.

The Core Concept Explained: OmniStudio separates guided interaction, data mapping, orchestration, and UI presentation. That separation is critical for high-volume public-sector intake because each asset can be tested and reused independently.

Step-by-Step Technical Analysis: Design the user journey first, then decide which OmniStudio asset owns each responsibility. OmniScript captures guided input, DataRaptors map Salesforce data, Integration Procedures orchestrate server-side work, and FlexCards expose summarized context. After assembly, validate data payloads, error handling, security, and performance with realistic application records. Use FlexCards for a homepage widget that launches common processes and for quick-glance aggregation of complex data models.

Why the Incorrect Options Are Wrong: B may look related, but it does not place the logic in the correct declarative Public Sector or OmniStudio configuration layer. C may look related, but it does not place the logic in the correct declarative Public Sector or OmniStudio configuration layer.