What APIs should be used to transfer schemas from development to the production sandbox?

The choice of using Export/Import APIs to transfer schemas from a development environment to the production sandbox is correct because these APIs are specifically designed for managing schemas within Adobe Experience Platform. The Export API allows users to extract schema definitions from one environment, while the Import API facilitates the addition of those schemas into another environment, making it ideal for promoting changes from development to production.

When working with schemas, accurately transferring the schema definitions is crucial to maintaining data integrity, consistency, and alignment across different environments. The Export/Import flow ensures that the schemas retain their structure and relationships, allowing for a smooth transition.

The other options do not serve the purpose of transferring schemas effectively. For instance, the Create/Delete API pair focuses on individual schema management rather than bulk transfers, while Sync/Unsync does not pertain to the actual transfer of schema definitions but rather to the synchronization status of data entities. The GET/POST methods are general HTTP methods that can be used for various operations but do not specifically relate to schema transfers in this context.