What transformation occurs when data moves from the Bronze layer to the Silver layer in the medallion architecture?

The Silver layer applies data quality rules: deduplication; null handling; type casting; and conforming data to a standardized schema; making it suitable for cross-domain joins and further processing. The incorrect options ("Data is aggregated into pre-computed summary tables for reporting", "Data is loaded into a commercial data warehouse for BI tools", "Data is encrypted and archived for long-term cold storage") are distractors that don't fully capture the concept described.