Answer:
The correct answer is letter "C": information technology; competitive.
Explanation:
In the excerpt, there is an example of how Information Technology (IT) can be useful for a company to generate a competitive advantage. IT systems are useful to store information of customers and the products they purchase to identify petters the firm can use for future purchases or improve the customer service provided.
When the series of steps an organization takes to maximize the use of IT systems make of the firm unique, then we can say that the system has created a competitive advantage that is likely to be valued by clients and become an important core competency for the association.