Which of the Following Is NOT a Strategy to Increase

Multiple Choice

Which of the following is NOT a strategy to increase the response rate of mail surveys?

A) Include a prepaid envelope for the return of the completed survey.
B) Send a replacement survey if you have not heard from a participant within 2-3 weeks.
C) The cover letter should give very little information about the study in order to make the survey shorter.
D) Include a statement about the confidentiality of responses.