Which of the following is considered a non-relational database option in Azure?

Cosmos DB is considered a non-relational database option in Azure because it is designed to support various data models, including key-value, document, column-family, and graph. Being a multi-model database service, Cosmos DB allows for the flexibility of schema, meaning it can handle unstructured, semi-structured, and structured data without rigid table schemas. This makes it suitable for modern applications that require scalability, lower latency, and the ability to work across multiple regions.

On the other hand, SQL Database is a relational database that relies on structured schemas and SQL for data manipulation. SharePoint List, while it can store data in a flexible manner, is primarily designed for collaboration, not for large-scale data operations typical of databases. Azure Table Storage is a service for storing large amounts of structured data but is not as versatile as Cosmos DB in terms of data models; it is often considered more of a semi-relational approach with a simpler structure.