400
Which of the following lists the three main methods of administering survey questionnaires?
a.Self-administered questionnaires, face-to-face interviews, and mail surveys
b.Face-to-face interviews, mail surveys, and electronic surveys
c.Face-to-face interviews, telephone interviews, electronic surveys
d.Telephone interviews, electronic surveys, and self-administered questionnaires
e.Face-to-face interviews, self-administered questionnaires, and telephone surveys