Final answer:
Create Raving Fans refers to both Chick-fil-A's business strategy and the practices established by its founder Truett Cathy, making the answer both a and b.
Step-by-step explanation:
Create Raving Fans is a concept widely recognized within the business strategy sphere. Specifically, it refers to the business practices and principles utilized by Chick-fil-A founder Truett Cathy, which have been instrumental to the company's growth and customer satisfaction for over six and a half decades. The correct answer to the question posed is C. Both a and b, as it is the business strategies employed by Chick-fil-A and a set of practices that have been in use since the early days of the company's history.