Which of the following services can be integrated with Oracle OAC?

Oracle Analytics Cloud (OAC) is designed to provide advanced analytics capabilities in the cloud and offers integration with various data sources to enhance its functionality. The integration with Autonomous Database Warehouse (ADW) is a key feature of Oracle Analytics Cloud, allowing users to leverage the power of a fully managed, self-repairing database optimized for data warehousing.

ADW provides a serverless, scalable environment tailored for analytics, and integrating it with OAC enables seamless data access and analysis. This integration allows users to perform complex queries and get insights in real time, leveraging advanced analytics features available in OAC such as machine learning and visualization.

While other platforms like Amazon RDS, Google Cloud Storage, and Microsoft SQL Server are significant data sources, the specific and optimized integration with ADW represents the best fit within the Oracle ecosystem, enhancing the analytics capabilities tied closely to Oracle's cloud offerings. This makes ADW the most relevant for integration within the context of Oracle OAC's intended use and capabilities.