J.D. Power and Associates and other market research firms recruit groups of consumers for ________, each of whom are paid to record all of their purchases on a regular basis. Businesses pay firms such as J.D. Power for their reports that answer the question, “How many times did our customers buy our products this year compared to last year?”
A) focus groups
B) experiments
C) syndicated panels
D) curated data mining
E) mall intercept interviews