All of the following are functions of the questionnaire introduction EXCEPT:
a. Asks for prospective respondent's agreement to take part in the survey.
b. Identifies sponsor of the survey.
c. Indicates the purpose of the survey.
d. Determines whether prospective respondent is qualified respondent to take part in the survey.
e. Provides information about other respondents.
Answer: e. Provides information about other respondents.