When a firm has many customers and has placed purchase transactions in a data warehouse, it can then use techniques to identify groups based on purchasing patterns and tailor offers to individual customers.

The correct answer is letter "D": data mining.

Explanation:

Data mining is the group of techniques and technologies that allow exploring large databases automatically or semi-automatically with the objective of finding repetitive patterns, tendencies or rules that explain the behavior of the data given a certain context.

I think the answer is "Segmentation techniques".

Explanation:

Segmentation is an important process in marketing. This is where you identify seperate categories of potential customers with similar characteristics and who would react to a given marketing strategy the same way.

When the data of the many customers are recorded, it is easier to select similar patterns in their purchasing behaviour.

what do you mean.why did u repeat the question.