A marketing researcher is interested in examining the cause and effect relationship between advertising and sales increase. Which of the following is the most appropriate to address this research objective?

A marketing researcher is interested in examining the cause and effect relationship between advertising and sales increase. Which of the following is the most appropriate to address this research objective? 








A. Personal interview

B. Focus group

C. Internet survey

D. Experiment

E. Telephone survey










Answer: D


Marketing

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