In Relativity, a dynamic object is a custom object created by a user or administrator to store and organize data specific to a case's needs. Unlike system-defined objects like 'Document', dynamic objects are user-defined to track information that doesn't fit into standard fields, such as custodian details, interview notes, or key case issues. They are "dynamic" because they can be created, modified, and linked to other objects (including documents) to build relational databases within a workspace, tailoring the environment to a specific matter's requirements.

A. System-defined objects are built into the Relativity platform by default and are not user-created.

C. A temporary file is a transient file created by an operating system or application, not a persistent, structured object in Relativity.

D. A backup file is a copy of data used for restoration purposes and is unrelated to the application's object model.

1. Relativity. (n.d.). Objects. Relativity Documentation. Retrieved from the official Relativity documentation portal. In the "Objects" section, the documentation explicitly states, "Relativity refers to user-created objects as dynamic objects."

2. Relativity. (n.d.). Creating and editing objects. Relativity Documentation. Retrieved from the official Relativity documentation portal. This page details the process and purpose, stating, "You can create custom objects, called dynamic objects, to store information unique to a case."