Which merge object type is essential for managing user assignable capabilities in SailPoint IdentityIQ?

The correct choice is the Capability merge object type, which is vital for managing user-assignable capabilities within SailPoint IdentityIQ. Capabilities represent specific permissions or roles that users can be granted, allowing for fine-grained access control in an organization.

When defining capabilities, administrators can set them up to be assigned to users based on various conditions or roles they fulfill, ensuring that users have the appropriate access necessary for their job functions. This ability to manage capabilities directly contributes to a streamlined provisioning process and helps maintain compliance with security and access requirements.

In contrast, other options serve different purposes within IdentityIQ. ScoreConfig is mainly related to the scoring of risk associated with access or identities, RuleRegistry pertains to the management of identity rules, and Configuration deals with broader system settings and configurations rather than specifically handling user capabilities.