Match the survey types with their characteristics. Drag and drop application. Mail Mail drop zone empty. Telephone Telephone drop zone empty. Interviews Interviews drop zone empty. Web Web drop zone empty. It is undermined by distrust, call screening, and voicemail. It is growing in popularity but needs a well-defined group, ideally on a question of self-interest. It is expensive and time-consuming but results are often high quality. It requires a current mailing list