A．Project organizer．
B．Public relations officer．
C．Marketing manager．
D．Market research consultant．

A．Quantitative advertising research．
B．Questionnaire design．
C．Research methodology．
D．Interviewer training．

A．They are intensive studies of people’s spending habits．
B．They examine relations between producers and customers．
C．They look for new and effective ways to promote products．
D．They study trends or customer satisfaction over a long period．