Concept:
A Join operation in GIS links attribute (non-spatial) data to spatial features using a common field or key.
Step 1: Understand Join.
The Join operation associates records from an attribute table with spatial features based on a common identifier.
Step 2: Identify the correct GIS function.
Hence,
\[
\boxed{\text{Join links spatial and non-spatial (attribute) data}.}
\]
Therefore, the correct option is
\[
\boxed{(C).}
\]