Executives at Hartford Clothing, a retail department store chain, want to find out what products their customers buy, when they purchase products, and what days of the week are most popular for shopping. Executives want to discover customer patterns and make predictions about their customers' buying habits. What would be the most effective tool for Hartford?

Data Mining System

Explanation:

Data Mining is the process of finding information from large set of data by applying statistics, database systems, machine learning, visualization and information sciences to understand the system and match their requirements with such systems.

It involves finding abnormalities, sequence and correlations within large data sets to predict results by involving high level techniques to extract tangible information

Data mining has helped in a lot of ways by using information from this source to increase profits, cut Expenditure, improve customer relationships, reduce risks etc

The effective tool for Executives at Hartford Clothing is Data Mining System to generate information.

answer; tech (a) is correct;