Which of the Following Contributed Most to the Growth of Marketing

Multiple Choice

Which of the following contributed most to the growth of marketing research?

A) Firms were producing too many unpopular products that no one wanted to buy.
B) Firms were experiencing stiff competition from foreign manufacturers.
C) Firms had to gauge market needs because they could no longer sell all they could produce.
D) Advertising agencies learned they could earn more client fees by doing marketing research.
E) Increased government regulation made marketing research a necessity.