Another variation of the self-administered survey is the drop-off survey, which must be selfexplanatory because:
a. the sample population is not necessarily representative.
b. generally time and cost are very important.
c. the surveys are left with the respondents, who fill them out without assistance.
4. D) there are no survey interviewers to retrieve the completed forms.
Answer: c. the surveys are left with the respondents, who fill them out without assistance.