A Marketing Researcher Has Been Commissioned to Conduct a Survey

A marketing researcher has been commissioned to conduct a survey regarding consumers' personal financial management behaviour. The researcher is faced with the challenge that the information is of a personal nature, there are many questions that the client would like answers to, the budget is tight, and results are required in only a few months. Which survey methodology would you recommend? Justify your choice by outlining the factors you considered and explaining why the other survey methodologies were excluded.