The process through which analysts sift through massive amounts of available information to identify unique patterns of behavior among different customer groups is called ________.

A) data warehousing
B) causal modeling
C) data mining
D) futuring

The process described is data mining, which involves using algorithms and statistical methods to identify patterns and relationships within data sets. Data warehousing refers to the process of collecting and storing large amounts of data in a centralized repository, while causal modeling and futuring are not specifically related to this process.