A good cover letter for a mailed questionnaire would do all but which of the following?
A) communicate the general purpose of the study
B) give assurances of respondents' anonymity and/or confidentiality
C) explain how the respondent was selected
D) not identify the survey sponsor in order to avoid bias
E) offer incentives such as a copy of the study

Question

Quizplus · Accepted Answer

A good cover letter should identify the survey sponsor to establish credibility and trust, rather than avoid bias.

A Good Cover Letter for a Mailed Questionnaire Would Do