A GIS analyst has a feature class and a non-spatial table stored in the same...

A relationship class defines a permanent association between a feature class and a table or between two feature classes in a geodatabase. Composite relationship classes enforce referential integrity, ensuring that related records remain consistent (e.g., when a parent record is deleted, related child records are also removed).

Attribute join (Option A) is temporary and does not enforce integrity.

Spatial join (Option B) requires spatial relationships and applies only between spatial datasets.

Relationship class (Option C) allows managing relationships between spatial and non-spatial tables with referential integrity.

Therefore, the correct answer is C.

—