• Cloud SQL helps organizations capture data and rapidly pass massive amounts of messages securely between other Google Cloud Platform big data tools and other software applications.
• Compute SQL offers industry-leading local SSD performance and integrates with the other products in the Google Cloud Platform suite.
• Cloud SQL ingests event streams from anywhere, at any scale, for simple, reliable, real-time stream analytics.
• Cloud SQL is a fully-managed database service that makes it easy to set up, maintain, manage, and administer relational MySQL and PostgreSQL databases in the cloud.

The correct answer is:

• Cloud SQL is a fully-managed database service that makes it easy to set up, maintain, manage, and administer relational MySQL and PostgreSQL databases in the cloud.