Identify the downstream dependencies by reviewing the data lineage and relationships between the data warehouse, dataflows, and semantic models, but without testing changes in a separate environment to save time.

Create a backup of the data warehouse, dataflows, and semantic models before making any changes, and proceed directly to implement changes in the production environment to meet tight deadlines.

Notify the relevant stakeholders and team members of the planned changes, and rely solely on their feedback to understand the potential impact on downstream dependencies without reviewing data lineage.

Identify the downstream dependencies by reviewing the data lineage, create backups, collaborate with stakeholders, and test changes in a separate environment before deploying them to the production data warehouse.

All of the above