You Must Conduct Research to Find Out a Great Deal

Multiple Choice

You must conduct research to find out a great deal of information about the motives and desires of potential customers for a home delivery grocery service.You need a sample size of at least 300 people who spend at least $100 weekly at the supermarket,and you don't have a lot of money to conduct the research,so you should use:

A) a marketing experiment
B) in-home personal interviews
C) focus group interviews
D) mail surveys
E) observation research