Final answer:
In Watson Studio, unstructured data of a project resides in D. Object Storage, which is a flexible and scalable solution for storing large volumes of data.
Step-by-step explanation:
In Watson Studio, the unstructured data of a project resides in Object Storage. Object storage is a type of data storage architecture that manages data as objects, and it is well-suited for storing unstructured data such as images, videos, documents, and more. It provides a scalable and cost-effective solution for storing large volumes of data.
Object Storage is different from a database in that it does not structure the data into tables or use a relational model. Instead, it stores data as independent objects with unique identifiers. These objects can be accessed and retrieved as needed, making it flexible and suitable for projects with unstructured data.
In summary, the unstructured data of a project in Watson Studio resides in Object Storage, which is designed for storing and managing unstructured data efficiently.