If an interviewer wanted to reach the teen market, a fast and low-cost method would be to use ________.

If an interviewer wanted to reach the teen market, a fast and low-cost method would be to use ________.

If an interviewer wanted to reach the teen market, a fast and low-cost method would be to use ________.



A. telephone interviews

B. mail questionnaires

C. focus groups

D. online surveys



Answer: D


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