Which profile setting defines how embedded objects are treated during discovery?

The correct answer, which pertains to how embedded objects are treated during the discovery process, is the setting that enables the extraction of children objects from the parent documents. When the "Extract children" profile setting is enabled, it allows for the identification and extraction of any files or items embedded within other documents, such as attachments within emails or files within presentations. This is crucial during discovery because it ensures that all relevant information, including those files that may not be immediately visible, is collected and made searchable.

In contrast, the other options, while important in data processing, pertain to different aspects. For example, Email Output primarily focuses on the way email data is formatted and exported, rather than the treatment of embedded objects. Deduplication addresses the removal of duplicate documents, ensuring a more streamlined dataset but does not specifically address extraction of embedded items. DeNIST pertains to the identification and removal of known, non-user-created files based on the National Software Reference Library, which also does not address embedded objects directly. Each of these settings plays a unique role in the overall discovery process but does not define the treatment of embedded objects the way "Extract children" does.